Rotel RA-611

 Here is RA-611, a truly sophiscated pre-main amplifier created for excellent stereo listening, at surprisingly reasonable cost. Not only it hasinherited all the outstanding performances of the predecessor RA-610,but also it is incorporated with much more improved electronics.  And convenient features. The amplifier then offers greter versatility and simplicity of usage not found in those at comparable price.

Think of its modest power of 30 W x 2 continuous RMS both channels driven. The distortion that is way below 0,1% at normal listening. The phono overload that is amazing at 100 mV. And the power bandwidth that is really wide from 5 to 50,000 Hz. Look at the controlsand the connections; you can play two tape recorders and dub each other with a flick of switch, two record players, and two auxiliary components. To suit your listening taste, thers are many controls for simple operation.

 Features

Powerful 140 watts (IHF) to generate amazingly transparent sound

Split electric power supply system

Direct coupled circuitry

Versatility in controls and simplicity in operations

Handsomely trimmed aluminum extrusion panel

Controls layout designed with optimum human engineering

Rotary - Speakers, Monitor, Selector and Volume

Slide - left and right Bass, left and right Treble, and Balance

Pushbuttons - Power, Low Filter, High Filter, Tone Defeat, Mode, Loudness and Audio Muting

Convenient headphone jack and power beacon

Facilities for two magnetic phonos, tuner, two tape recorders and two auxiliary components

Professional tape dubbing feature - from tape 1 to tape 2 or reverse

Three convenient AC outlets

Wood cabinet included

Specifications

Total Music Power (IHF):  140 W at 4 Ω

Continuous Power RMS (all at less than 0,5% THD and 1 kHz ):

42 W + 42 W each channel driven at 4 Ω

35 W + 35 W each channel driven at 8 Ω

37 W + 37 W both channel driven at 4 Ω

30 W + 30 W both channel driven at 8 Ω

Harmonic Distortion:  less than 0,1% at 27 W + 27 W into 8 Ω

IM Distortion:  0,15% before clipping at 8 Ω

Frequency Response:  5 to 100,000 Hz, -3 dB at 8 Ω

Power Bandwidth:  5 to 55,000 Hz, IHF at 8 Ω

Input Sensitivity/Impedance:

Phono ! :  2,5 mV/47 k Ω

Phono 2 :  2,5 mV/47 k Ω

Tuner :  150 mV'40 Ω

Aux 1, Aux 2 :  150 mV 40 k Ω

Tape Monitor IN :  230 mV/47 k Ω

Main Amp In :  800 mV/33 k Ω

Tape DIN :  330 mV / 100 k Ω

Signal-to-Noise Ratio:

Phono :  65 dB

Aux :  70 dB

Tuner, Tape In "  70 dB

Residual Noise: 1 mV

Damping Factor:  35 at 8 Ω

Loudness Control:  +10 dB at 50 Hz; +4 dB at 10 kHz

Bass Control :  ±10 dB at 10 kHz

Treble Control :  ±10 dB at 10 kHz

High Filter :  -10 dB at 10 kHz

Low Filter : -10 dB at 50 Hz

Muting Level:  -20 dB

Phono Overload:  over 100 mV

Phono Equalizer:

=17 dB at 50 Hz

-13,5 dB at 10 kHz

Crosstalk :  -40 dB at 10 kHz

Power Voltage "  AC 100, 117, 220, 240 volts

Dimensions (W x H x D):  16-1/2" x 5" x 9-1/2")

Weight:  12 lbs