ESC
A-7055

A-7055

BrandOnkyo
FunctionAmplifier, Integrated
Produced1974
CountryJapan
Form FactorStandard Width
Signal PathAnalog Hardware
Dimensions423 x 136 x 358mm
Weight9.3kg
PowerAC 110/120/220/240V, 50Hz/60Hz
AMPLIFIER : Damping factor80
AMPLIFIER SECTION : Frequency Response10Hz to 70kHz (+0, -1dB)
AMPLIFIER SECTION : Input Impedance100kΩ
AMPLIFIER SECTION : Intermodulation Distortion0.05% (Rated power output)
AMPLIFIER SECTION : Load Impedance4-16Ω
AMPLIFIER SECTION : Power Bandwith (IHF)10-100kHz (-3dB, THD 0.2%)
AMPLIFIER SECTION : Power Output45W / 45W (Continuous, each channel driven, 4Ω)
MPLIFIER SECTION : Power Output33W / 33W (Continuous, each channel driven, 8Ω)
MPLIFIER SECTION : Power Output36W + 36W (Continuous, both channels driven, 4Ω)
MPLIFIER SECTION : Power Output26W + 26W (Continuous, both channels driven, 8Ω)
AMPLIFIER SECTION : Power Output (IHF)125W (Dynamic, 4Ω)
AMPLIFIER SECTION : Power Output (IHF)82W (Dynamic, 8Ω)
AMPLIFIER SECTION : Rated Input1V
AMPLIFIER SECTION : Signal to Noise Ratio (IHF)110dB (A network)
AMPLIFIER SECTION : Total Harmonic Distortion0.03% (10W Output)
AMPLIFIER SECTION : Total Harmonic Distortion0.1% (Rated power output)
PRE AMPLIFIER SECTION : Input Sensitivity / Impedance1/2:1.2/2.4/4.8mV / 50kΩ (Phono)
PRE AMPLIFIER SECTION : Input Sensitivity / Impedance100mV / 100kΩ (Tuner, Aux, Tape)
PRE AMPLIFIER SECTION : Intermodulation Distortion< 0.05% (At rated output)
PRE AMPLIFIER SECTION : Total Harmonic Distortion from 20Hz to 20kHz< 0.03% (At rated output)
PRE AMPLIFIER SECTION : High Filter7kHz (6dB/oct)
PRE AMPLIFIER SECTION :Low Filter30Hz (6dB/oct)
PRE AMPLIFIER SECTION : Frequency Response10Hz to 70kHz (Tuner, Aux (+0,-1dB))
PRE AMPLIFIER SECTION : Frequency Response30Hz to 15kHz (Phono1, Phono2 (+-0.5dB))
PRE AMPLIFIER SECTION : Loudness Contour+5B (70Hz), +5dB (10kHz)
PRE AMPLIFIER SECTION : Muting-20dB
PRE AMPLIFIER SECTION : Output Voltage1V (2,2kΩ)
PRE AMPLIFIER SECTION : Output Voltage100mV (Rec Out, 10kΩ)
PRE AMPLIFIER SECTION : Phono Overload Level (RMS)230mV (1kHz)
PRE AMPLIFIER SECTION : Phono Overload Level (RMS)1.1V (10kHz)
PRE AMPLIFIER SECTION : Signal to Noise Ratio (IHF)75db (Phono1, Phono 2 (A network))
PRE : Signal to Noise Ratio (IHF)90dB (Tuner, Aux, Tape (A network))
Semiconductors39 transistors, 18 diodes, 2 thermistors
Channels2 Channel
Connections
  • AC Outlet (switched) · Other
  • AC Outlet (switched) · Other
  • AC Outlet (Unswitched) · Other
  • AC Outlet (Unswitched) · Other
  • Aux · RCA (Phono, Cinch) · Socket (Female), Stereo
  • GND · Binding Post
  • Headphone · 1/4" Phone Jack (6.35mm) · Socket (Female), Stereo
  • Microphone · 1/4" Phone Jack (6.35mm) · Socket (Female), Stereo
  • Phono · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Speakers (A) · Binding Post · Stereo
  • Speakers (B) · Binding Post · Stereo
  • Tape 1 (play) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 1 (rec) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 2 (play) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 2 · DIN · Socket (Female), Stereo
  • Tape 2 (rec) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tuner · RCA (Phono, Cinch) · Socket (Female), Stereo
Controls
  • Balance · Rotary Pot
  • Bass · Rotary Pot
  • Function (source) · Rotary Pot with Switch · MC/Phono / Tuner / Aux
  • Loudness · Toggle Switch · On / Off
  • Monitor Tape 1 · Toggle Switch
  • Monitor Tape 2 · Toggle Switch
  • Power · Toggle Switch
  • Speakers · Rotary Switch · Off / A / B / A+B
  • Tape 1 Monitor · Toggle Switch
  • Tape 2 Monitor · Toggle Switch
  • Tone · Toggle Switch · On / Off
  • Treble · Rotary Pot
  • Volume · Rotary Pot