Rotel RC-970BX MkII Pre Amplifier

In the Eighties & Nineties, Rotel were one of the go-to brands for people making that first step onto the Hi-Fi ladder, and here we have a classic budget Pre-Amplifier in the form of an RC-970BX MkII. It is in good condition for its age with just a couple of minor blemishes – please see photographs – and will come professionally packaged with manual plus, our usual three month warranty.
Rotel Say….
We have been designing and manufacturing high quality, high performance audio electronics for more than 30 years. This preamplifier was designed to offer lifelike sound and is a natural extension of our love of music. We are famous for our passion for good sound and our love of music.
This preamplifier has been designed to complement the RB 970BX Mk II power amplifier and the RQ 970BX external phone stage. Many people use CD players as the main source these days and the need for a built in phono stage has diminished. We felt that the RQ 970BX phono section could be optimized for higher performance if it was a separate unit. The highly musical performance of the RC 970BX Mk II was achieved at a lower price for the people who don’t want a phono section. With this idea in mind, we deleted the phone section in this preamplifier.
The dual preamplifier outputs on the back panel make it easy to use two power amplifiers with this preamplifier. The circuits in the Printed Circuit Board (PCB) are all symmetrical. The timing of the music is preserved by equal length circuit traces. We have used metal film resistors and film type polypropylene and polystyrene capacitors in critical circuit locations to enhance sound quality. We use the PCB traces to transfer signals in preference to jumper wires as we feel we achieve greater consistency and better sound quality by doing this.
We have a highly regulated power supply in this preamplifier. This gives it ample reserves to recreate all the power and the delicate nuances of your favourite music. This is more expensive than other methods of design but it is good for the music.
Specifications:
Total Harmonic Distortion: ≤ 0.004% (20 – 20 kHz)
Intermodulation Distortion: ≤ 0.004% (60 Hz: 7 kHz = 4: 1)
Usable Headphone Impedance: 8 – 2,000 Ω
Input Sensitivity / Impedance: 150 mV / 24 kΩ
Output Sensitivity/ Impedance: 1.0 Volt/ 100 Ω
Frequency Response: 4 Hz – 100 kHz + 0, – 3 dB
Tone Control Range: Bass: ± 6 dB (100 Hz); Treble: ± 6 dB (10 kHz)
Signal to Noise Ratio: 95 dB
Power Requirement: 230 Volts, 50 Hz
Power Consumption: 10 Watts
Dimensions: 440 (W) x 286 (D) x 72 (H) mm
Weight: 4.0 kg