SONY TA-2000F

Commentary

A preamplifier developed by combining Sony's numerous technologies.

In order to minimize the generation of intermodulation distortion, which is the most harmful of the HiFi reproduction systems, we use an FET developed exclusively for audio and a silicon transistor with high withstand voltage and excellent features.
An FET is used in the first stage of each unit amplifier through which a signal passes to achieve excellent transmission characteristics.

It is designed with a maximum sensitivity of 1.2 mV and a maximum allowable input of 300 mV in consideration of the output applied to the head amplifier.
Therefore, a high-voltage transistor and a power supply voltage of 150 V are designed so that distortion does not occur at the front stage of volume.
The Phono1 also incorporates a grounded FET head amplifier with a maximum sensitivity of 0.06 mV (allowable input of 15 mV) so that low-power MC cartridges can be used as they are.
We have also succeeded in obtaining an allowable input of 1 v or higher for the microphone amplifier so that it can be used even at the high output of a professional microphone.

The meter and meter amplifier are highly accurate enough to satisfy the BTS standard in both frequency characteristics and linearity characteristics.
By using this VU meter, it is possible to check the frequency characteristics of frequency records and standard tapes during playback of records and tapes.
In addition, by using a microphone whose characteristics are known and using test records and tapes, it is possible to check the acoustic state of the entire reproduction system including the listening room. Therefore, a special microphone amplifier is built in separately from other source systems.

If two tape decks are connected, printing can be performed only by switching the function lever.
In addition, you can mix from the microphone while printing the tape.

The turnover frequency can be changed to 500 Hz and 250 Hz in the low range and to 2.5 kHz and 5 kHz in the high range. In addition, a variable turnover type is adopted in which the turnover point automatically changes depending on the compensation amount (position of the knob).
The compensation amount is accurate in 2 dB steps, so you can enjoy the best condition according to the program source, speaker characteristics and sound characteristics of the room.
There is also a tone cancel switch that instantly switches to a flat characteristic by skipping the tone control circuit regardless of the position of the knob.

Both low filter (50 hz) and high filter (9 khz) have built-in genuine passive filter with sharp shoulder characteristics.

The level adjustment attenuators are attached to the Phono2, Tuner, AUX1, AUX2, and Tape1 inputs, so you can adjust the level to match the level of Phono1 so that you can enjoy the same level even if you switch the inputs.

It is equipped with a high-quality headphone output that can be used directly as a line out output. It has a dedicated quasi complimentary service SEPP circuit built in and a dedicated volume.

It is equipped with various input / output terminals such as center channel output terminal, 2 sets of pre-out terminals, pre-out level switching, 3 sets of AUX terminals and 2 sets of Phono terminals.

Phono1 can be switched to 5 impedance types, Low 0.06 mv (10 Ω, 30 Ω) and High 1.2 mv (33k Ω, 47k Ω, 82k Ω) through the head amplifier of FET.

Model Rating

Type	All-silicon transistor stereo preamplifier
Circuit system	Head amplifier : 1-FET gate installed type circuit Equalizer amplifier : 2 FET, 1 PNP, 2 high voltage NPN transistor direct connection circuit Flat amplifier : all-FET C couple circuit Headphone amplifier : Quasi complimentary service circuit Microphone amplifier : 1 FET, 1 high-voltage NPN transistor directly connected circuit
Input maximum sensitivity / Impedance	Phono1 (High Level) : 1.2mV/33k Ω, 47k Ω, 82k Ω Phono1 (Low Level) : 0.06mV/10 Ω, 30 Ω Phono2 : 1.2mV/47k Ω MIC : 0.5mV/100k Ω Tuner, AUX1, 2, 3, Tape1, 2, Rec/PB (input section) : 110mV/100k Ω
Maximum allowable input	Phono1(High Level):300mV Phono1(Low Level):15mV Phono2:300mV MIC:1200mV
Signal-to-noise ratio (A Network)	Phono1 (High Level) : 70 dB or more (input 1.2 mV) Phono1 (Low Level) : 60 dB or more (input 0.12 mV) Phono2 : 70 dB or more (input 1.2 mV) MIC : 50 dB or more (input 1.2 mV) Tuner, AUX1, 2, 3, Tape1, 2, Rec/PB (input section) : 90 dB or more (input 110 mV)
Output voltage / Impedance	Rec Out 1, 2 : 100 mv (max. 80 v) / 10k Ω Center Out : 0.5V/2.6k Ω Headphone : 0.6 v (with 8 Ω headphone) / 8 Ω Rec/PB (Output Part) : 30mV/82k Ω Output 1, 2 : 1V/3k Ω, 0.3V/6k Ω (switchable)
Voltage amplification factor (1kHz)	Column : Input, Row : Output Rec Out Output Center Out Headphone Rec/PB (Output) Phono1(High Level): 38.5dB 59dB 53dB 53dB 21.5dB Phono1(Low Level): 64.5dB 84.5dB 79dB 79dB 47.5dB Phono2: 38.5dB 59dB 53dB 53dB 21.5dB MIC: 46.5dB 66dB 60dB 60dB 28.5dB Tuner: 0dB 19.5dB 13.5dB 13.5dB -17dB AUX1, 2, 3 : 0dB 19.5dB 13.5dB 13.5dB -17dB Tape1, 2 : 0dB 19.5dB 13.5dB 13.5dB -17dB Rec/PB (input section) : 0dB 19.5dB 13.5dB 13.5dB -17dB
Harmonic distortion factor	0.03% or Less (1 kHz, Rated Output)
Cross modulation distortion factor	0.05% or Less (at Rated Output, 60 hz : 7 khz = 4 : 1)
Frequency characteristic	Phono1 and 2 : deviation from RIAA curve ± 0.5 dB MIC : 30 Hz to 30 kHz, ± 2 dB Tuner, AUX1, 2, 3, Tape1, 2, Rec/PB (input) : 10 Hz to 100 kHz, + 0 -2dB
Tone control	Bass : 50 Hz, 100 Hz, ± 10 dB Treble : 20 kHz, 10 kHz, ± 10 dB (2 dB step, 11-step switching)
Filter	Low Filter : 50 Hz or less, 12dB/oct. High Filter : 9 kHz or higher, 12dB/oct.
Semiconductor used	Transistor : 44 FET:26 Diode : 15
Pwer	100 VAC, 50Hz/60Hz
Power outlet	Total 500W (linked Route 3, one non-linked system)
Power consumption	23W
External dimensions	Width 400x Height 149x Depth 315 mm
Weight	9kg
Attachment	2 x connection code (RK-74) 1 x connection code (RK-81) Four short plugs Pin Plug (Red / White) x 2 Each