Audio Database
AA-920
Commentary

The FM front-end section uses a high-end dual-gate MOS FET and a frequency-linear four series varicon to improve various characteristics. The IF amplifier stage uses an IC and three ceramic filters to improve selectivity and capture ratio.

The AM tuner section uses a 3-row varicon and ceramic filter.

An FET is used in the first stage of the preamplifier section to eliminate distortion caused by impedance deviation, and a low-noise transistor is used in the equalizer section to improve the dynamic range.
The tone control uses an NF type that takes advantage of the linear characteristics of the B-type variable resistor.

The power amplifier section uses a SEPP-ITL-OTL-OCL direct connection circuit.

In addition to two types of dubbing jacks, a microphone jack is installed.

Comes with a preset volume and can be used independently for pre-main and main.

Equipped with a microphone jack.

Model Rating
Type FM/AM integrated stereo amplifier
FM Tuner Section
Receive Frequency / IF Frequency 76 MHz ~ 90MHz/10.7 MHz
Sensitivity (IHF) 2.0 μ V
1.9 μ V (listed in separate catalog)
Harmonic distortion factor Mono : 0.4% or less
Stereo : 0.8% or less 0.7% or less (listed in separate catalog)
Signal-to-noise ratio 70 dB or more
Selectivity 70 dB or more
Image ratio 80 dB or More (84 MHz)
IF interference ratio 100 dB or More (84 MHz)
Spurious 34 dB or less
Antenna input impedance 300 Ω Balanced Type, 75 Ω Balanced Type
Stereo separation 38 dB or more
40 dB or more (listed in separate catalog)
Capture Ratio (IHF) 2.5dB
<AM Tuner Section>
Receiving frequency 535 kHz to 1605 kHz
Sensitivity (IHF) Dummy : 10dB/1MHz (400 Hz, 30% Mod)
Loop : 200 μ V/1MHz
Image ratio 80 dB or More (1 MHz)
IF interference ratio 70 dB or More (1 MHz)
Selectivity 30 dB or more
AM distortion factor Not more than 1.0%
0.8% or less (listed in separate catalog)
Signal-to-noise ratio 50 dB or More (400 Hz, 30% Mod)
Amplifier Unit
Output
Music Power : 110W (4 Ω)
76W (8 Ω)
Continuous rated power : 40W + 40W (4 Ω)
32W + 32W (8 Ω)
Harmonic distortion factor 0.09% or Less (8 Ω)
Output Bandwidth (IHF) 10 Hz ~ 70 kHz (8 Ω)
Frequency characteristic 5 hz to 80 khz -3dB
10 Hz ~ 75 kHz -3dB (listed in separate catalog)
Input Sensitivity / Impedance Phono : 3mV/50k Ω
2.5mV/50k Ω (Listed in separate catalog)
AUX, Tape Monitor (Din/Pin) : 150mV/100k Ω
MIC : 2.2mV/20k Ω
2.5mV/50k Ω (Listed in separate catalog)
Signal-to-noise ratio (IHF) Phono : 80 dB or more
Aux : 90 dB or more
Phono input resistance 130mV(1kHz)1%
Residual noise 1.0 mV or more
Channel separation Phono : 50 dB or more
Equalizer RIAA ± 1 dB
Tone control Bass : 100 Hz ± 10 dB
Treble : 10 kHz ± 10 dB
Loudness control
(Volume -30dB)
100Hz:+10dB
10kHz:+6dB
Filter High Cut Filter : -9dB, 10 kHz
Low-cut filter : -8dB, 50 Hz
<General>
Semiconductor used FET : 4 pcs
IC : 5
Transistor : 40
Diode : 21
Pwer 100 VAC ~ 240 V, 50Hz/60Hz
Power consumption 200W maximum
External dimensions Width 454x Height 155x Depth 330 mm
Width 457x Height 168x Depth 368 mm
Weight 13.0kg