ROTEL RA-810

Commentary

A pre-main amplifier that uses a 2-power supply system and power amplifier circuit directly connected to all stages.

The preamplifier section has a 3-stage direct connection circuit with low-noise silicon transistors and E-E feedback to maintain a highly stable equalizer characteristic.
In addition, noise is reduced by adopting 3-stage direct-coupled circuit of PNP transistor only.

Equipped with a dubbing circuit that allows easy recording from one tape recorder to another.

A protective circuit that protects the speakers and transistors protects them from accidents caused by shorting of the speaker terminals.

Model Rating

Type	Solid-state stereo amplifier
Main Amplifier Section
Music Power (IHF)	4 Ω : 180W 8 Ω : 125W
Effective power (RMS)	4 Ω : 60W + 60W 8 Ω : 40W + 40W
Harmonic distortion factor	40W output : 0.3% (20 Hz to 20000 Hz)
Cross modulation distortion factor	40W output : 0.2%
Frequency characteristic	4 hz to 75,000 hz, + 0 -3dB
Output band characteristic	5 Hz to 50,000 Hz
Damping factor	35 (8 Ω)
Input Sensitivity / Impedance	1V/33k Ω
Speaker impedance	4 Ω ~ 16 Ω
Preamplifier Section
Output voltage	1 V ~ 3 V
Harmonic distortion factor	0.1%
Frequency characteristic	3 Hz to 50,000 Hz, + 0 -3dB
Signal-to-noise ratio	Phono1, 2 : 65 dB AUX1, 2, Tape In : 75 dB
Residual noise	0.5mV
Input Sensitivity / Impedance	Phono1 : 2mV/50k Ω Phono2 : 2, 4, 8mV/30, 50, 100k Ω Tuner, AUX1, 2, Tape In : 115mV/40k Ω Tape DIN : 330mV/100k Ω
Equalizer	Within ± 0.5 dB deviation from RIAA standard curve
Loudness	50Hz:+10dB 10kHz:+4dB
High filter	10kHz:-10dB
Low filter	50Hz:-10dB
Muting	10kHz:-20dB
Bass	50 Hz : + / - 10 dB
Treble	10 kHz : ± 10 dB
<General>
Power supply voltage	100 V, 117 V, 220 V, 240 V, 50Hz/60Hz
Power consumption	130W
External dimensions	Width 420x Height 140x Depth 304 mm
Weight	10kg