Audio Database
TA-1066
Commentary

This is a pre-main amplifier that inherits the design philosophy of the ES series, draws out the program source faithfully, and aims at no coloring.

The power amplifier section uses a direct-coupling type differential-amplified 2 power supply and pure complimentary service circuit.
In the preamplifier section, a transistor developed for low noise like the TA 1140 is used as an equalizer amplifier.

Equipped with NF-type tone control, the sound quality can be adjusted according to the program source and sound characteristics of the listening room.

Model Rating
Type All-silicon transistor stereo premain amplifier
Circuit system
Power Amp : Direct coupling net complimentary service
- Symmetric SEPP circuit
Preamp : Equalizer amplifier with 2 power supply
NF Tone Control
Power Amplifier Unit
Output (0.1% harmonic distortion factor)
Dynamic power (IHF, constant voltage supply method) : 50W (8 Ω)
75W (4 Ω)
Effective power
1 kHz, both channels (0.8% distortion) : 18W + 18W (8 Ω)
22W + 22W (4 Ω)
40 Hz to 20 kHz, both channels (0.8% distortion) : 15W + 15W (8 Ω)
Output band characteristic 10 Hz ~ 40 kHz (8 Ω, IHF)
Harmonic distortion factor 0.8% or Less (Rated Output)
0.2% or Less (at 1W output)
Cross modulation distortion factor
(60Hz:7kHz=4:1)		 0.8% or Less (Rated Output)
0.2% or Less (at 1W output)
Frequency characteristic 10 Hz ~ 200 kHz, + 0 -2dB at 1W Output
Damping factor 22 or More (1 kHz, 8 Ω)
Residual noise 0.25 μ W or less
Preamplifier Section
Input Sensitivity / Impedance Phono : 2.5mV/47k Ω
Tuner, AUX, Tape1, 2, Rec/PB (input section) : 250mV/50k Ω
Maximum allowable input Phono : 70 mV (0.8% distortion rate, 1 kHz)
Output Level / Impedance Rec Out1, 2 : 250mV/10k Ω
Rec/PB (Output Part) : 30mV/82k Ω
Signal-to-noise ratio Phono : 70 dB or more (input 2.5 mV, B network)
Tuner, Tape1, 2, Rec/PB (input section) : 90 dB or more (input 250 mV, A network)
Frequency characteristic Phono : RIAA curve ± 1 dB
Tuner, AUX, Tape1, 2, Rec/PB (Input) : 20 Hz to 60 kHz, ± 3 dB
Tone control Bass : 100 Hz ± 10 dB
Treble : 10 kHz ± 10 dB
Filter High Filter : 5 kHz or higher, 6dB/oct.
<General>
Semiconductor used Transistor : 22
Diode : 6
Pwer 100 VAC, 50Hz/60Hz
Power consumption 80W
External dimensions Width 416x Height 120x Depth 280 mm
Weight 6kg