SONY TA-1166

Commentary

A pre-main amplifier that uses a direct coupling type power amplifier section.

The power amplifier section uses a direct coupling method. All stages are directly coupled without using a coupling or capacitor.
Compared with conventional output circuits using capacitors, this allows power to be taken even at a lower frequency and prevents a decrease in damping factor.
In principle, this direct-coupling method amplifies up to direct current, so it protects the speaker by cutting out the very low frequencies below the music component.

The preamp section is equipped with input circuits such as two phono inputs and an AUX input Route 3, left and right independent tone control, low / high filter, and sliding balance control.
In addition, a large dynamic range is obtained by using a high voltage of 50 v for the pre-part power supply and increasing the allowable level of each input.

Equipped with a quick access switch, the phono 1 and tuner can be switched quickly with this lever.
This eliminates the need to switch the rotary switch in many steps and suppresses inadvertent noise.

The switches on the back allow you to use the preamp and power amp independently.

Equipped with a speaker selector switch, two sets of speakers can be switched for use.

The tone control is 2 dB step NF type.

Equipped with a tape monitor / source selection switch.

It is equipped with a loudness switch.

Model Rating

Type	All-silicon transistor stereo premain amplifier
Circuit system	2-power system Quasi complimentary service symmetric SEPPP OTL circuit
Power Amplifier Unit
Output	Music output : 120W (1% distortion rate) Dynamic output : 70W (IHF standard) Rated Output : 30W + 30W (8 Ω)
Output band characteristic	15 Hz ~ 35 kHz (IHF Standard)
Harmonic distortion factor (1 kHz)	0.1% or Less (at Rated Output) 0.05% or Less (at 1W Output)
Cross modulation distortion factor (60Hz:7kHz=4:1)	0.2% or Less (Rated Output) 0.03% or less (at 1W output)
Frequency characteristic	15 Hz ~ 300 kHz, + 0 -2dB at 1W Output
Input Sensitivity / Impedance	Power Amp Input : 0.8 V (8 Ω, at rated output) / 100k Ω
Output terminal	Speaker : 2 systems, load impedance 4 Ω ~ 16 Ω Headphone : Load impedance 8 Ω or more
Damping factor	70 (1 kHz, 8 Ω)
Signal-to-noise ratio	90 dB or more (closed circuit)
Residual noise	0.05 μ W or Less (8 Ω)
Preamplifier Section
Input Sensitivity / Impedance	Phono1, 2 : 1.2mV/47k Ω Tuner, AUX1, 2, 3, Tape Rec/PB (input section) : 150mV/100k Ω
Output Level / Impedance	Pre Amp Output : 0.9V/15k Ω Rec Out : 150mV/10k Ω Rec/PB (output part) : 20mV/80k Ω
Harmonic distortion factor	0.05% (1 kHz, Rated Output)
Frequency characteristic	10 Hz ~ 100 kHz + 0 -2dB
Signal-to-noise ratio	Phono1, 2 : 70 dB or more (input 1.2 mV, B network) Tuner, Aux1, 2, 3, Tape Rec/PB : 90 dB or more (input 150 mV, C network)
Tone control	Bass : 100 Hz, ± 10 dB Treble : 10 kHz, ± 10 dB 2-dB step 10-step switching
Loudness switch (at Volume -30dB)	50Hz:+8dB 10kHz:+4dB
Filter	Low:100Hz High:5kHz
<General>
Semiconductor used	Transistor : 23 Diode : 7 pcs
Pwer	100 VAC, 50Hz/60Hz
Power outlet	300W Linked with power switch : 2 systems Not linked with power switch : 1 system
Power consumption	88W
External dimensions	Width 422x Height 148x Depth 321 mm
Weight	7.8kg
Attachment	Polishing Cloth x1 2 short plugs 1 fuse (5A) Pin Plug (Red / White) x 2 Each