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Rotel RB-1050

Stereo Power Amplifier (2004-08)

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Rotel RB-1050

Specifications

Power output: 70 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 100kHz

Total harmonic distortion: 0.03%

Damping factor: 500

Input sensitivity: 1V

Signal to noise ratio: 116dB

Speaker load impedance: 4Ω (minimum)

Dimensions: 430 x 92 x 350mm

Weight: 8.1kg

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rating
Reviewed Feb 13th, 2017 by 1inventor

Describing the sound of an amplifier without mentioning what speakers and associated equipment is rubbish, people have to know what equipment is used in order to get a better impression.

I listen to a pair of Magnepan MMGs, NHT SB2 and SB3. All have had their crossovers upgraded with metalized polypropylene caps, inductors and Mills Resistors. All sufficiently broken in.

My source is a Sony S9000es going optically into my TAE9000ES. The Digital Filter is set to Slow, for a warmer sound.

I own a Carver TFM 35 and 35x from the 90's and still running strong. I also own and use a Parasound 750A. The Carvers are more rounded, not having a bright top end but has more body, slower on the attack, but warmer, very pleasant but lacking in the imaging department. They drive my Maggies with ease. (All my amps have 10 gauge IEC power cables, the Carver was converted to IEC.)

The Parasound I prefer head over heals over both. It has a neutrality that can err on the side of very slight dark, the highs are there but not in your face, it is smooth and it grips my Maggie panels with ease, all with only 75 watts per channel at 8, 125 at 4 ohms.

This 1050 is neutral in the lower registers, a bit anemic in the bass arena, but have a grit on the highs that I can't stand...both the Carver and Parasound do not. This is very obvious with speakers like the SB2 and SB3 that have metal dome tweeters. It is very easy to get listeners fatigue....paired with a darker speaker, it may do better.

The amp has the reserve, the fact that it can drive my magggies with ease is a testament. Clinical, sterile come to mind describing this amp. It's not a bad amp, it just has bright tendencies. It is also worth mentioning that reverb trails and decay are not so good with the 1050.

I have also run this amp with a Schiit Passive Pre, and the grittiness is still there. The 1050 however, is built very well and is quite attractive to look at, but sound has precedence.

The amplifier has phenomenal specs, a good power supply and able to drive a low impedance load, but sadly, it is a clinical amplifier, it is not warm, it is cold. There are other amplifiers on the market and I frankly, am biased towards the Parasound gear, especially after using the 750A, I liked them so much that I bid on and won an HCA 1000.

rating
Reviewed Feb 26th, 2016 by Denhees

sweet little amplifier , used this in my small room setup , clean, crisp and warm sounding amp.

 

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