SONY TA-F3000

Commentary

A pre-main amplifier that inherits the design philosophy of the TA-F5000 and aims for high performance in a compact size.

The power supply section is equipped with a torus toroidal transformer jointly developed with a transformer manufacturer.
In this transformer, the winding tension of the wire is increased by making the cross section of the core (iron core) of the transformer oval, which is usually square, and vibration is reduced to less than 1/4 compared with conventional products, thus realizing a compact power supply with excellent sound quality.
It also uses an advanced S. T. D. power circuit that further enhances the S. T. D. power supply, which supplies power to the pre-section and power section independently, and realizes sound through the core even at high volume.

MOS-FET is adopted for the final stage of the power section.
The bias circuit uses an optical element that has the same temperature characteristics as the MOS-FET. It also uses a fixed optical bias circuit that effectively fixes the bias current by taking advantage of the high temperature stability of the MOS-FET.
In addition, the single push-pull configuration reduces crossover distortion and ensures smooth sound quality.

Heat sinks from the voltage amplification stage to the final stage are also L/R-independent.
In addition, the ground circuit is separated to prevent the mutual influence of noise between the pre-part and the power part.

Center defeat volume is used for tone and balance circuit.
This volume has a structure in which the tone control circuit and balance circuit are separated from the signal path when the knob is set to the center position, so that the signal does not pass through the extra circuit and the switch itself can be eliminated, so that more pure sound quality can be obtained.

It has a phono equalizer amplifier compatible with both MM and MC cartridges.

Wireless remote control is included.

Model Rating

Type	Pre-main amplifier
Rated Output (20 Hz ~ 20 kHz)	60W + 60W (4 Ω) 40W + 40W (8 Ω)
Total harmonic distortion factor	0.008% (8 Ω load at 10W)
Intermodulation distortion factor (60 hz : 7 khz = 4 : 1)	0.008% (8 Ω load, at rated output)
Frequency characteristic	Phono MM : 20 Hz to 20 kHz ± 0.2 dB Line : 5 Hz to 100 kHz + 0 -3dB
Input Sensitivity / Impedance	Phono MM : 2.5mV/50k Ω Phono MC : 180 μ V/100 Ω Line : 150mV/20k Ω
Signal-to-noise ratio	Phono MM:85dB Phono MC:75dB Line:100dB
Output Level / Impedance	Rec out : 150mV/1k Ω
Headphone out	10 mW (8 Ω)
Tone control	Bass : ± 7 dB (100 Hz) Treble : ± 7 dB (10 kHz)
Pwer	100 VAC, 50Hz/60Hz
Power consumption	120W
Auxiliary power outlet	Power switch interlock : 2 systems Power switch not linked : 1 system
External dimensions	Width 280x Height 130x Depth 400 mm
Weight	Approx. 9.0 kg
Attachment	Wireless Remote Control RM-S3000