BOWERS & WILKINS 683 SERIES

The imposing 683 is the genuine three-way speaker of the 600 Series, with a line-up of technologies and a level of performance that defies its entry-level place in the market. For large rooms, two 683s make a formidable partnership, either for stereo hi-fi or fronting a home theatre installation.

Deep, dynamic, bottom-end power is delivered by a pair of aluminium/paper/Kevlar® composite cone bass drive units. The 150mm Kevlar® midrange handles middle frequencies with its characteristic clarity and tunefulness, but, for the first time in a 600 Series speaker, includes FST cone surround technology for extra detail and resolution. The Nautilus™ tube-loaded, aluminium dome tweeter, featuring a new surround material to improve spaciousness and imaging, adds needle-sharp top end all the way to 50kHz and beyond.

The improvements to the drive units in the new 600 Series make it possible, for the first time, to introduce a minimalist crossover to the range. The use of components that are fewer in number but higher in quality – hand-picked in exhaustive listening tests – reduces the degradation of the signal significantly. So, whether you’re enjoying hi-fi or home cinema, what you hear is that much closer to what was recorded.

SPECS

Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Mushrooms
FST
Technical features	Nautilus™ tube loaded aluminium dome tweeter Kevlar® brand fibre cone FST™ midrange Aluminium/paper/Kevlar® cone bass driver Flowport™
Description	3-way vented-box system
Drive units	1x ø25mm (1 in) aluminium dome high-frequency 1x ø150mm (6 in) woven Kevlar® cone FST™midrange 2x ø165mm (6.5 in) Aluminium/paper/Kevlar® cone bass
Frequency range	-6dB at 30Hz and 50kHz
Frequency response	38Hz - 22kHz ±3dB on reference axis

Dispersion	Within 2dB of reference response Horizontal: over 60º arc Vertical: over 10º arc
Sensitivity	90dB spl (2.83V, 1m)
Harmonic distortion	2nd and 3rd harmonics (90dB, 1m) <1% 90Hz - 22kHz <0.5% 120Hz - 20kHz
Nominal impedance	8Ω (minimum 3.0Ω)
Crossover frequencies	350Hz, 4kHz
Crossover Filters	1st Order – tweeter 2nd Order – midrange low pass 2nd Order – midrange high pass 3rd Order – bass
Recommended amplifier power	25W - 200W into 8Ω on unclipped programme
Max. recommended cable impedance	0.1Ω
Dimensions	Height: 985mm (38.8 in) (not including plinth or feet) Width: 198mm (7.8 in) Depth: 340mm (13.4 in)
Net weight	26kg (57.3 lb)
Finishes	Black Ash Red Cherry

Hi-Fi Choice August 2007
"B&W’s astonishing new 600 Series is finally here, and the 683 has been worth the wait"
Read the full review

Related products

DS3

The DS3 is a wall-mounted surround speaker that can operate in either ‘dipole’ or ‘monopole’ modes, to create an authentic all-enveloping effect of the auditorium in a large space.

684

The 2½-way 684 floorstander is a great choice for hi-fi or home cinema in medium-sized to large rooms. Its twin Kevlar drive and aluminium dome tweeter make for a refined performance.

HTM61

The HTM61 is the larger of the two centre speakers in the 600 Series, and is tailor-made to partner either of the two floorstanding main speakers in a commanding home theatre system.

683 Theatre

The 683 Theatre is the reference 600 Series home theatre system, put together to fill large, open spaces effortlessly with the richest, most realistic sound.Copyright © 2012 Bowers & Wilkins. All rights reserved.

Runco QuantumColor Q-650i LED Projector

Runco's revolutionary QuantumColor™ series projectors pair energy-saving LED technology with proprietary Runco engineering to create unsurpassed performance and unrivaled customization. The Runco QuantumColor Q-650 home theater projector includes Runco’s InfiniLight™ lampless LED illumination technology to provide an infinite light source that creates an energy-efficient projector with the widest color gamut ever available in home theater projection. But simply creating a projector platform with lampless technology and the largest color gamut isn’t enough. Harnessing its incredible color options, Runco utilizes its unmatched Personal Color Equalizer™, which allows color adjustment that includes those exactly defined by the cinematographer and the color preferences of each individual viewer for each source. Proprietary Runco Smart Color (RSC™) provides a hue compensation curve and gamut mapping that allows for lifelike, accurate flesh tones while increasing color saturation, without sacrificing the purity of other colors.

Coupled with InfiniLight’s lampless LED technology is QuantumColor’s unparallel brightness. To learn more about Q-lumens and why QuantumColor™ products outperform their specifications, read Runco’s e-book on “Out-of-the-Box Brightness for Life™.”

Runco’s revolutionary lampless InfiniLight™ LED projector

Offering the largest color gamut and Runco’s Personal Color Equalizer™ proprietary color management for stunning realism

Exclusive Runco SmartColor™ hue compensation curve and gamut mapping for accurate fleshtones

Uses 70% less power than lamp-based projection with Runco InstantOn™ eliminating the need to leave projector in power-consuming “standby” mode

KRELL Evolution Two PreAmplifier

Power Supplies
Housed in a separate chassis, the power supply makes use of extensive electrical and magnetic shielding to keep radiated interference out of critical preamplifier circuits. Internal line conditioning circuitry filters RF noise on the AC power, and compensates for asymmetric power waveforms and DC on the mains. Power for the analog stages comes from a large 170 VA toroidal transformer. This transformer drives four 8-amp bridge rectifiers and 39,600 microfarads of filter capacitance. Each monaural preamplifier has as much power supply capability as many stereo power amplifiers.
The main regulators for the analog stages are scaled-down versions of those used to power the output stages of the Evolution One amplifier. Operating in current mode, with fully complementary gain stages and output drivers, wide bandwidth, low output impedance, and high current capability, the main regulators easily exceed the requirements of the analog stages. The driver and output stages in the main analog regulators use five pairs of 150 Volt, 8 Amp, 40 megahertz power transistors.
A dedicated 90 VA toroidal transformer with three independent secondary windings
powers the preamplifier's digital control circuitry. The regulators for the control circuitry team ultra-stable voltage reference chips with the same discrete high current driver and output transistors used in the main analog regulators. These ample power reserves are brought to the Evolution Two via high reliability 12-pin connectors with machined, gold plated, three-amp contacts. Secondary voltage regulators for each analog stage in the Evolution Two provide ultra-quiet, rock-solid supply rails, as well as complete isolation between all the analog stages.
When the Evolution Two is placed in stand-by, all the analog circuitry continues to operate at the same bias current; however, the main analog supply voltages decrease by 30 percent. The result is a corresponding 30 percent reduction in power consumption and heat without the need to wait for the electronics to "warm up" before listening.
Zero Feedback Balanced Current Mode Design
The signal path is fully complementary and fully balanced from input to output. All transistors operate in Class A mode. CAST inputs drive a newly designed current mode balanced input stage, which uses a unique topology able to reject common- mode input noise over an unusually wide bandwidth. Single-ended and balanced inputs drive a dynamically-cascoded JFET buffer, which has tremendous open-loop linearity and very high input impedance, to eliminate loading effects. The voltage signals are then converted into balanced current signals, the form in which they remain through the remainder of the signal path. The audio signal remains in the current domain throughout the entire preamplifier. Only at the single-ended and voltage outputs is it converted back to the voltage domain.
All signal gain is realized in the current domain using proprietary multiple-output current mirrors with nearly 500 times the open loop linearity of other designs. Negative feedback is not used anywhere in the Evolution Two preamplifier, nor is it necessary. Open-loop distortion is typically less than 0.005% (50 parts per million), and the open loop bandwidth extends to two megahertz. The result is an extraordinarily wide and deep image, with an open, effortless sound. The signal switching relays are hermetically sealed and use gold-plated bifurcated contacts for maximum signal integrity. Where needed multiple relays are connected in a "T" configuration to virtually eliminate crosstalk from unselected inputs. The volume setting can be adjusted and displayed either numerically, from 0 to 151, or in dB, from - inf to +12.0 dB.

Fully Balanced Discrete Volume Control
The volume control is realized with a 16-bit balanced resistor ladder, which uses low-resistance, high-linearity solid-state switches and discrete precision resistors. Control signals for the switches are optically coupled for low noise and maximum signal integrity. The bandwidth and transient response of the preamplifier circuitry are virtually unaffected by the volume setting. As a result high frequencies sound especially smooth and extended, and music seems to emerge from "jet black" silence. The analog and digital signal paths are not interconnected. Where necessary, digital control signals are optically coupled to analog circuits.
The Evolution Two has two buffered tape outputs: one linked to the main signal selection bus, and another with its own independent signal-selection bus. This allows the option of listening to one source while recording another, or the option of connecting two tape decks having different input signals. Both tape outputs have single-ended and voltage outputs. Either the fourth single-ended input or the third balanced input can be user-configured as a tape monitor input, allowing the opportunity to use home or professional recording equipment.
Advanced Microprocessor Control and Custom Software
A user menu allows extensive customization of the preamplifier operation, including (but not limited to) input names, input-specific gain trims, Theater Throughput ™, display brightness, and 12-volt triggers. Integration is supported via RS- 232,12 Volt trigger, and RC-5 inputs, as well as an IR transmitter for programming a learning remote control.
A built-in digital network allows multiple preamplifiers to be linked together, blending the convenience of a single-chassis stereo preamplifier with the sonic performance obtainable only from individual monaural preamplifiers. Six or more preamplifier channels can be "daisy-chained" together and controlled simultaneously for multi-zone or home theater applications. The digital link allows the user settings in one preamplifier channel to be conveniently "cloned" to other linked preamplifier channels. Similarly, upgraded software in one preamplifier channel can be installed in other preamplifier channels using the digital link.
In the event that the DC level at any of the preamplifier channel outputs exceeds a nominal level, sophisticated protection circuitry safely mutes the outputs, traces the source of the excess DC, and displays a diagnostic message on the main display. On power-up, the microprocessor verifies that all the circuit boards in the preamplifier channel are properly connected and are compatible with the version of software installed.krell.com

Inputs 3 CAST via 4-pin bayonet connectors 3 balanced via XLR connectors 4 single-ended via RCA connectors Tape input 1 balanced via XLR connector or 1 single-ended via RCA connector, user configurable Main outputs 2 CAST via 4-pin bayonet connectors 1 balanced via XLR connector 1 single-ended via RCA connector Tape outputs 1 balanced via XLR connector and 1 single-ended via RCA connector, buffered, connected to main inputselection bus 1 balanced via XLR connector and 1 single-ended via RCA connector, buffered, connected to a dedicated record-output bus Control inputs 1 RS-232 input via a 9-pin D-subminiature connector 1 remote IR detector input via a 3-conductor 3.5 mm connector 1 12 VDC trigger input via 3.5 mm connector 1 preamplifier link via an RJ-45 connector Control outputs 2 individually programmable 12 VDC trigger outputs via 3.5 mm connectors 1 preamplifier link via an RJ-45 connector Power output 1 phono power output (+/-20 VDC) for KPE via a 9-pin D-subminiature connector Input impedance CAST: 35 Ohms Balanced: 40 k Ohms Single-ended: 20 k Ohms Output impedance CAST: >1 M Ohms Balanced: 250 Ohms Single-ended: 125 Ohms Gain 12 dB (CAST or balanced output) 6 dB (single-ended output)

Volume control Balanced, current-mode, 16-bit, discrete R-2R ladder Input overload CAST: 11 mA RMS Balanced: 9 V RMS Single-ended: 18 V RMS Output overload CAST: 22 mA RMS Balanced: 20 V RMS Single-ended: 10 V RMS Frequency response 20 Hz to 20 kHz +/-0.01 dB Balanced or single-ended inputs: 0.2 Hz to 1.3 MHz +0, -3 dB CAST inputs: 0.2 Hz to 2 MHz +0, -3 dB Total harmonic distortion plus noise Balanced Output: <0.003%, 20 Hz to 20 kHz, 4 V RMS CAST output: 4 mA RMS Signal-to-noise ratio 4 V RMS balanced or 4 mA RMS CAST output Wideband, unweighted: >97 dB "A" weighted: >104 dB Power consumption Standby: 50 W Power on: 80 W Power on, with KPE: 90 W Dimensions Preamplifier only: 17.3 in.W x 3.7 in. H x 18.5 in. D 43.8 cm W x 9.5 cm H x 47 cm D Power supply only: 17.3 in. W x 3.7 in. H x 17.3 in. D 43.8 cm W x 9.5 cm H x 43.8 cm D Preamplifier channel: 17.3 in. W x 7.3 in. H x 18.5 in. D 43.8 cm W x 18.5 cm H x 47 cm D Stereo pair: 17.3 in. W x 14.6 in. H x 18.5 in. D 43.8 cm W x 37.1 cm H x 47 cm D Weight Shipped: 69 lbs., 31.2 kg Preamplifier only: 21 lbs., 9.5 kg Power supply only: 31 lbs., 14 kg

Denon AVR-3313CI

Metal front panel and flip-down door, the Denon AVR-3313CI IN-Command 7.2 channel AV Receiver is a stately addition to any home theater system. It delivers 125 watts per channel--more than enough power for the largest of rooms and the most demanding of speakers. With seven HDMI inputs and three HDMI outputs, the receiver lets you enjoy high-definition audio and video from a range of devices--including set-top boxes, Blu-ray players, game systems, and tablet computers--in multiple rooms at once. The AVR-3313CI incorporates true multi-zone HDMI audio/video distribution with the inclusion of its HDMI matrix switching functionality. It is also three-source, three-zone compatible. The AVR-3313CI is the high-end model in Denon's line of IN-Command AV Receivers.

AVR-3313CI IN-Command AV Receiver At a Glance: Seven discrete 125-watt channels of equal power for dynamic sound 3D pass-through technology for watching the latest 3D movies Advanced circuitry to convert all video signals to 4K Networking functions to play Internet radio or digital music files Wireless streaming of your iTunes music with Apple's AirPlay technology Audyssey MultEQ XT creates an optimal acoustic profile for your home theater Three-source, three-zone capability Multi Zone HDMI audio/video distribution Seven HDMI inputs and three HDMI outputs to connect a variety of devices 10. Intuitive user interface with Setup Assistant and Denon Remote App Three-year warranty

7.2-channel AV receiver that offers seven discrete 125-watt channels of equal power for dynamic surround sound. View larger.

Seven HDMI inputs and three HDMI outputs for high-definition audio and video from a variety of HDMI-compatible devices. View larger.

AirPlay technology allows you to listen to music from the iTunes library on your Apple device. View larger.

Receiver upscales all video signals to 4K, enabling you to use it with 4K monitors and projectors. View larger.

Superior Surround Sound and 3D Pass-Through Technology
The AVR-3313CI IN-Command AV Receiver is a 7.2-channel AV receiver that offers seven discrete 125-watt channels of equal power for dynamic surround sound, along with dual subwoofer outputs for optimal bass performance throughout your room. View 3D movies through your home theater system using the receiver's pass-through technology.

4K Upscaling for Pristine Picture Quality
The receiver upscales all video signals to 4K (3,840 by 2,160 pixels), which provides four times the picture quality of 1080p. This enables you to use it with 4K monitors and video projectors.

Advanced Functions to Play Streaming Media
The AVR-3313CI IN-Command AV Receiver allows you to enjoy a variety of advanced networking capabilities, like listening to Internet radio and playing music files stored on your PC. The AVR-3313CI supports services like SiriusXM, vTuner Internet Radio, Pandora, and Flickr as well as Apple's AirPlay technology, which allows you to listen to music content from the iTunes library on your iPad, iPhone, iPod touch, PC, or Mac. The receiver is DLNA 1.5 certified and compatible with PCs running Microsoft Windows 7. (Subscriptions to SiriusXM are sold separately. The service is available in US only)

Optimum Sound with Audyssey MultEQ XT
The AVR-3313CI comes equipped with Audyssey MultEQ XT technologies to create an immersive, balanced acoustic profile for your home theater system. Audyssey MultEQ XT technology automatically customizes your home theater to overcome acoustical problems specific to your room, resulting in exceptionally clear sound. MultEQ XT uses high-resolution equalization filters, making it ideal for large or odd-shaped rooms. The receiver incorporates Audyssey Dynamic EQ and Dynamic Volume technologies, too, for comfortable and optimal listening of any source at any volume.

Immersive Surround Sound with Audyssey DSX Technology
The AVR-3313CI comes equipped with Audyssey DSX technology. Audyssey DSX expands surround sound beyond 5.1 with more speakers for an immersive and lifelike home theater experience.

Assign Power Amps for Different Audio Setups
The AVR-3313CI supports up to 7.2 channels for surround playback. You can reassign the amplifiers from the two surround back channels to power a pair of front height speakers, or, to achieve higher-quality sound for two-channel stereo playback, you can configure the AVR-3313CI for front bi-amp operation.

Three-Source, Three-Zone Capability
The AVR-3313CI can be the centerpiece of a three-zone system, including the main room plus two additional playback areas, with independent sources available for each zone. It supports up to two different video sources and three different audio sources.

Enjoy Two Different HDMI Sources Simultaneously
The AVR-3313CI incorporates true multi-zone HDMI audio/video distribution with the inclusion of its HDMI matrix switching functionality. Equipped with three HDMI outputs (two parallel and one discrete), the AVR-3313CI allows for the connection of up to three different HDMI-equipped displays. The receiver can send two different HDMI feeds to two displays at the same time directly from the receiver, eliminating the need for costly external switches or remote control complexity.

Connect Your HDMI-Equipped Devices
The receiver is outfitted with seven HDMI inputs and three HDMI outputs (two parallel and one discrete) so you can enjoy high-definition audio and video from a variety of HDMI-compatible devices, like set-top boxes, Blu-ray players, game systems, and media players like Roku and Apple TV. An HDMI input on the front of the receiver offers a quick, convenient connection for portable devices such as camcorders and HDMI-equipped smartphones and tablets. The front panel also has a USB port to directly connect your iPod, iPhone, or USB drive to the receiver. A flip-down door on the aluminum front panel neatly hides controls and connections when you're not using them.

Intuitive Graphical User Interface and Remote App
The AVR-3313CI features a Setup Assistant along with a graphical user interface that simplifies the initial setup and daily operation of the receiver. In addition, the receiver supports the Denon Remote App, which lets you operate the receiver's main controls from your iPad, iPhone, iPod touch, or Android smartphone.

Intuitive graphical user interface with "Setup Assistant." (Click each to enlarge)

Denon remote app for Android and Apple.
(Click each to enlarge)

Denon Link HD Jitter-Free Audio Transmission Technology
The AVR-3313CI also incorporates Denon Link HD, Denon's proprietary jitter-free audio transmission technology. This technology is designed to work with Denon’s DBT-3313CI Universal Blu-ray/DVD/CD Player.

Built-In IP Allows for Custom Integration
The receiver also features versatile custom integration-friendly features such as RS-232 and IP Control for third-party controllers for seamless integration to home automation.

Product and Warranty Information
Sporting a sleek black finish, the receiver measures 6-3/5 by 17-1/10 by 14-9/10 inches (H x W x D) and weighs 26-1/2 pounds.

The AVR-3313CI IN-Command AV Receiver is backed by a three-year warranty.

Package Contents
AVR-3313CI IN-Command AV Receiver, remote control with batteries, AM and FM antennas, power cable, quick setup guide, owner's manual on CD-R, and Audyssey setup microphone. by denon.com

Marantz NR1403 Slim Line AV Receiver

Enjoy optimum audio and video quality through your home theater system with the NR1403 Slim Line AV Receiver from Marantz. Equipped with six HDMI inputs, including one on the front, this 5.1-channel receiver allows you to play sound and video from a variety of devices, including set-top boxes, Blu-ray players, DVD players, camcorders, and even tablet computers. Audyssey MultEQ technology optimizes the acoustics, while 3D pass-through support makes it great for playing Blu-ray 3D discs. Part of Marantz's Slim Line series, the NR1403 features a sleek design and a small footprint, making it well suited for audiophiles with space constraints.By Marantz.com

NR1403 Slim Line AV Receiver

• Slim design with half the height of traditional receivers
• Five audio channels with discrete power amplifiers for surround sound
• Audyssey MultEQ technology customizes audio for your living space
• Built-in 3D pass-through support for playing 3D videos
• Six HDMI inputs to play audio and video from multiple sources
• Intuitive, on-screen "Setup Assistant" for easy installation
• Three-year warranty

Surround Sound for Your Home Theater

With the NR1403 Slim Line AV Receiver, you can experience optimal sound through your home theater system and play music, movies, and more from a variety of sources, including Blu-ray players, game systems, and mobile devices. The NR1403 is a 5.1-channel receiver, so you can power left, right, and center speakers along with left and right surround speakers for optimal surround sound. It's well suited for family rooms, play rooms, dedicated TV and entertainment rooms, and even bedrooms.
Audyssey MultEQ for the Most Clear and Balanced Sound Possible
The NR1403 supports playback of the latest high-definition audio formats and has discrete power amplifiers for all five audio channels. Award-winning Audyssey MultEQ technology helps create an optimal acoustic profile for your home theater system, resulting in clear and balanced sound. In addition, built-in 3D pass-through technology allows the receiver to route 3D video signals from a Blu-ray player to your HDTV--making this great for enjoying Blu-ray 3D discs.
HDMI Inputs to Connect Multiple Devices

Thanks to six HDMI inputs--including one on the front--you can enjoy high-quality, high-definition audio and video from a variety of sources. The HDMI input on the front panel allows you to quickly and easily connect an HDMI-ready portable device, such as a camcorder or a tablet computer. The receiver is also equipped with one HDMI output along with front left and right preamp outputs for external power amplifiers.
The optional Marantz RX-101 Bluetooth Adapter (sold separately) enables the NR1403 to receive Bluetooth wireless signals.
Sleek Design and Easy On-Screen Setup
Like other products in Marantz's Slim Line series, the NR1403 receiver features a stylish black finish along with a slim profile and a small footprint, making it easy to fit into tight spaces. An intuitive, on-screen "Setup Assistant" simplifies the installation process.

Product and Warranty Information
The receiver measures 4-1/10 by 17-3/10 by 14-2/5 inches (H x W x D) and weighs 19-4/5 pounds. It comes with a remote control (batteries included).
The NR1403 Slim Line AV Receiver is backed by a three-year warranty.
What's in the Box
NR1403 Slim Line AV Receiver, remote control, two AAA batteries, AM loop antenna, FM antenna, AC power cable, quick setup guide, owner's manual on CD, and Audyssey setup microphone.

MK Sound MPS1611P

MK Sound Professional monitoring systems have become firm favorites in film and dubbing studios as well as in surround mixing applications. For smaller suites and more modest budgets, MPS 1611P offers critical listeners precision monitoring for extended periods with extraordinary accuracy and smooth response with no listener fatigue.
The MK Sound Professional MPS 1611P is a more compact, less-expensive monitor based on the popular MPS 2510P. The bi-amplified, two-way, near- to-mid-field monitor is suitable for stereo and multichannel applications, is magnetically shielded and can be used with any MK Sound Professional powered subwoofer.
These little speakers impress instantly, delivering an accurate, tonally neutral sound with natural dynamics and transient detail that combine to make it one of the most revealing two-way available.
Input options are balanced XLR and single-ended phono, both buffered for simultaneous connections.
The tapered bass port can be fitted with a removable plug. With the plug in place, MPS 1611P becomes a sealed-cabinet design, producing even tighter bass, ideal for satellite-subwoofer configurations with one of MK Sound’s acclaimed powered subwoofers. With the plug removed, MPS 1611P becomes a stand-alone, full-range ported system.
Extensive rear panel functions tailor the MPS 1611P’s response for optimal room and system integration. The Fixed/Variable gain switch is used in conjunction with the continuously variable gain control. Bass response can be switched between Full Range and Normal which attenuates low frequencies for use with a subwoofer. The 80Hz highpass filter is also useful with a subwoofer without bass management. The LED on the baffle appears brightest to the user when the cabinet is aligned properly relative to the monitoring position. Moderate price, modest footprint and reference level detail and transparency make the MPS 1611P the no-compromise choice for installations with space and/or budgetary constraints.
The MPS 1611P is a compact, high performance bi-amped active two-way, monitor loudspeaker utilizing a 1” polymer coated silk soft-dome, ferrofluid cooled dual-magnet tweeter with specially damped rear chamber, and a 6½” mineral-filled polypropylene cone, magnetically shielded, dual-magnet cast basket woofer. Featuring MK Sound’s proprietary Phase-Focused™ Crossover with Time domain Analysis, it provides amazing even dispersion of sound throughout a broad listening area with superior imaging and sound quality. Used by many noted Film and Music recording studios worldwide and delivers unparalleled transparency, accuracy, and dynamics while effortlessly handling voices, percussive effects, and musical instruments with life-like impact. Sealed or ported cabinet options as well as full range output or high-pass at 80 Hz. Available in black satin finish with black cloth grille.source mk sound

Input Impedance	15 kOhm balanced 60 kOhm single-ended
Fixed Input Sensitivity	200 mV = 85 dB SPL @ 2 meters, balanced 100 mV = 85 dB SPL @ 2 meters, single-ended
Variable Input Sensitivity	+24 dBu +6 dB: 85 dB SPL @1 m. (-6 dB) to 4 meters (+6 dB)
Frequency Response:	(anechoic) 80 Hz – 22 kHz ±3 dB (sealed cabinet – Normal setting) (wall or console loaded) 35 Hz – 22 kHz ±3 dB (sealed cabinet – Full Range setting) (wall or console loaded) 45 Hz – 22 kHz ±3 dB (ported cabinet – Normal setting) (wall or console loaded) 35 Hz – 22 kHz ±3 dB (ported cabinet – Full Range setting)
Cabinet Type	Sealed
Drivers	1” silk dome ferrofluid double ferrite magnet tweeter 6.5” Ultra-linear polypropylene bass/mid
Crossover Frequency	1.6 kHz
80 Hz Filter Type	Butterworth, Q=.707
80 Hz Filter Slope	12 dB/octave
Power Amplifiers	Bi-amplified, mixed bipolar DMOS transistors
Output, Bass/Mid Amp	100 W, 8 Ohm @ 0.02% THD @ 100 Hz
Output Tweeter Amp	50 W, 4 Ohm@ 0.02% THD @ 3 kHz
Recommended Power:	25 – 400 Watts
Finish:	Black Satin
Dimensions (HxWxD):	12.6” x 8.4” x 12.1” incl. heatsink 32 x 21.3 x 30.7 cm
Weight:	21 lb/ 9.4 kg.

ADCOM's GFP-815 Stereo Preamplifier is loaded

Seven analog source inputs include MM/MC Phono & MP3 (front & rear)

Phono Ground

Bass & Treble Tone Controls

Headphone Jack

12V trigger

RS232 Control

External IR input

Main and Record outputs

Remote Control with source selection

120-230VAC, 50-60Hz

Two channel audio is better than ever! The new GFP-815 supports a broad audio spectrum from 10Hz to 100kHz for high level sources and 20Hz to 80kHz for phono input. The GFP-815 is designed to capture all the fidelity that high resolution audio has to offer, with precision broadband components and an ultra low noise floor. This new ADCOM preamp hasn’t forgotten about your legacy or new components and provides you with support for source products ranging from turntables to MP3 players. Pair the GFP-815 with an ADCOM power amp and rediscover the magic of two channel audio.Source adcom.com