Technics EAA-2006/Technics 10A

Commentary

The first stereo control amplifier in the Technics series.

The amplifier is composed of a 2-stage NF circuit to obtain low distortion and large dynamic range.

By inserting a transistor ripple filter into the rectifier circuit of the heater for complete DC ignition, and by completely shielding the power supply, hum and noise are reduced.

The tone control section uses a new CR tone control that completely flattens at the midpoint of the volume.
In this circuit, only one C is operated at both rising and falling times, and the characteristic changes are flat without waviness. In addition, the changing point of the characteristic can be changed in 3 stages of both low and high sound.

A precision resistor of ± 1% is used for the equalizer circuit, and an error of ± 0.3 db or less db or less at 30 Hz and 15 kHz when each unit is.
In addition, the playback curve of the tape head terminal is adjusted to the characteristics of NAB, but it can be adjusted to the characteristics of individual heads.

A push switch is used for input switching, and the semi-fixed part can be adjusted from the front.

Model Rating

Type	Tube type control amplifier
Input sensitivity (1 kHz, output 1 V)	Phono:2mV Tuner:100mV Aux : 100 mV (Aux1 adjustable) Tape head:2mV Mic:1mV
Frequency characteristic	Phono : 30 Hz to 15 kHz (± 0.3 dB deviation from RIAA curve) Tape Head : deviation from NAB curve ± 0.5 dB, high frequency adjustable Tuner, Aux : 10 hz to 50 khz + 0 -1dB
Tone control	3-Step Changepoint Switchable Bass : 500 Hz, 250 Hz, 125 Hz Treble : 2 kHz, 4 kHz, 8 kHz Max + 16 dB, Min-20dB
Filter	Rumble : 30 Hz, 12dB/oct. Scratch : 8 kHz, 12dB/oct.
S/N ratio (IHFM standard, ASA standard, A-curve, input short)	Phono:70dB Tuner, Aux : 90 dB Tape head:65dB Mic:65dB
Output	10 v (HD 0.1%, 1 kHz)
Semiconductor used	Vacuum Tube (8 pcs) : 12AX7 : 8 pcs Transistor : 1 Diode : 8 pcs
Pwer	100 VAC, 50/60Hz
Power consumption	35VA
External dimensions	Width 420x Height 140x Depth 250 mm
Weight	7.6kg