Rotel RMB-1575 Five Channel Amplifier Reviewed

Rotel is one of the most established leaders in value-oriented audiophile gear.Rotel is the  giving home theater enthusiasts and audiophiles meaningful performance without a staggering price tag. One of the categories that Rotel has succeeded in most recently is in their digital multi-channel amps. With real power ratings you can get five channels of clean, quiet and bountiful power in an absolutely stunning chassis that borders on the levels of the uber-amps out there. The sound of the Rotel RMB-1575 ($2,799) is noticeably void of noise, a quality desirable to audiophiles in Class-A, Class-B designs. Class-D "digital" amps put the other designs to shame in terms of their quiet operation. Rotel's RMB-1575 also provides a very immediate sound, as it has so much more real power than even the top of the line AV receivers. This is valuable to home theater users pumping the latest HD audio codecs like Dolby TrueHD and or DTS Master Audio via HDMI from Blu-ray, who will now have the amplifier power to keep up.


High Points• Dollar for dollar, the power you get with the Rotel RBM-1575 makes it a killer value. It cannot be compared with even the best AV receivers as it has so much more power. It is clearly a step above.
• The "quiet" or low distortion sound of the amp is truly alluring for music lovers and movie enthusiasts alike, especially with the new HD audio codecs from Blu-ray.
• The casework on the Rotel RMB-1575 is gorgeous, comparing with the best in the business.
• The Rotel RMB-1575 runs cool as a cucumber compared to traditional amps

Low Points• Class-D "digital" amps have tons of power and run quietly and cool. However, they tend to lack the heft on the low end that you get from the best Class-AB amps, such as a Krell or even a comparably-priced ATI. Those amps are far heavier, larger and run much hotter, often with more distortion, yet there is no question as to the difference in sound. It is not a "one is better than the other" valuation. Class-D amps just sound different than traditional Class-AB amps.


Conclusion 

Rotel is back with another winner with the RBM-1575 five-channel Class-D digital amp. It is a good-looking contender that is the logical companion to today's latest AV preamps with the power needed to blow away even the best, most expensive AV receivers, especially on audiophile sources like DVD-Audio and SACD and, even more dramatically, on HD audio sources from Blu-ray.by jerry colliano

Performance

4 Stars

Value

4 Stars

Overall

4 Stars

Model	RMB-1575
Power Output All channels driven	250 Watts x 5ch (20-20 kHz, 0.03% THD, 8 ohms) 500 watts x 5ch (20-20 kHz, 0.03% THD, 4 ohms)
THD (20-20,000Hz) 8 ohms, all channels driven	< 0.03%
IM Distortion	< 0.03%
Damping Factor (8 ohms)	400
Gain	27.1dB
Input Sens. / Impedance	1.5 V / 8.3 k ohms
Frequency Response (+/-1 dB)	10 - 80 kHz (+3dB)
S/N Ratio (IHF A)	109 dB
Power Consumption	600 Watts
Dimensions (W x H x D) mm	431 x 144 x 407 mm
Dimensions (W x H x D) in.	17 x 5 5/8 x 16 in
Front Panel Height	3U / 132.6mm / 5 2/8 in
Weight (net)	11 kg, lb.