Sony TA-2000F (1971–1977)

At 9 kilograms, it sits on the rack like a declaration - this was Sony's answer to the high-end preamp arms race before the ES badge even existed.

Overview

The Sony TA-2000F is an all-silicon transistor stereo preamp, released in 1971 and produced through at least 1977. It sold for ¥128,000, which was serious money at the time. It predates the ES (Elevated Standard) line, so it is a precursor to Sony's better-documented high-end era. Owners report it was designed as a system component, often paired with the TA-3200F power amplifier. Together they made a solid-state stack aimed at professional-grade performance in domestic setups.

The chassis is 400 mm wide and packed tight. This is not a minimalist design. It was built to be versatile and capable, and one former owner describes it as "extremely well built and very versatile." It has dual VU meters, a forest of switches, and input/output flexibility that was rare even among high-end units of the period. It supports two tape decks, allows microphone mixing during tape dubbing, and has switchable pre-out levels. That is semi-pro or enthusiast territory, not casual listening.

The TA-2000F flew under the radar for years, overshadowed by later ES models. Collectors now rate it as a high-end vintage preamp that is "HIGHLY sought after," according to community reports. One Audiokarma user says they "regret having sold it." Others praise it when paired with the TA-3200F, saying the combination "works incredibly" well. It has its critics too. One owner noted a Marantz preamp on the same system sounded "crystal clear" by comparison, suggesting the Sony may be slightly veiled or less transparent.

Specifications

Manufacturer	Sony
Model	TA-2000F
Year of Production	1971–1977
Product Type	All-silicon transistor stereo preamplifier
Original Price	¥128,000
External Dimensions	Width 400 × Height 149 × Depth 315 mm
Weight	9kg
Power Supply	100 VAC, 50Hz/60Hz
Power Consumption	23W
Power Outlet	Total 500W (linked Route 3, one non-linked system)
Semiconductors Used	Transistor: 44, FET: 26, Diode: 15
Input Sensitivity / Impedance	Phono1 (High Level): 1.2mV/33kΩ, 47kΩ, 82kΩ; Phono1 (Low Level): 0.06mV/10Ω, 30Ω; Phono2: 1.2mV/47kΩ; MIC: 0.5mV/100kΩ; Tuner, AUX1, 2, 3, Tape1, 2, Rec/PB (input section): 110mV/100kΩ
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) / 10kΩ; Center Out: 0.5V/2.6kΩ; Headphone: 0.6 V (with 8 Ω headphone) / 8 Ω; Rec/PB (Output Part): 30mV/82kΩ; Output 1, 2: 1V/3kΩ, 0.3V/6kΩ (switchable)
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.

Key Features

FET-First Signal Path with High-Voltage Silicon Transistors

Sony built the TA-2000F around an FET developed exclusively for audio, placed at the first stage of every signal path. The aim was superior input impedance and lower noise, which matters most in phono stages. Combined with high-withstand-voltage silicon transistors, the design keeps distortion minimal even at the front end of the volume control. The power supply runs at 150 volts, a high rail voltage for a preamp. That allows wide dynamic headroom and clean amplification before any signal attenuation.

Dual Phono Inputs with MC Capability via FET Head Amplifier

The Phono1 input is a full head amp system. It supports both high-level (1.2 mV) and ultra-low-level (0.06 mV) inputs, the latter enabled by a grounded FET head amplifier. Moving-coil (MC) cartridges with outputs as low as 0.06 mV can be used directly, without an external step-up transformer. Impedance is switchable across five settings: 10 Ω and 30 Ω for MC cartridges, and 33kΩ, 47kΩ, 82kΩ for MM. Phono2 is simpler, but still offers 1.2 mV sensitivity with 47kΩ loading, which suits standard MM cartridges.

Professional-Grade Microphone Input with 1200 mV Tolerance

The microphone amplifier is built for professional-level sources. Sensitivity is 0.5 mV and allowable input is up to 1200 mV, so it can take high-output mics without clipping. It is a separate circuit from the other input stages, which keeps down crosstalk and noise. Frequency response is flat from 30 Hz to 30 kHz (±2 dB), and the S/N ratio exceeds 50 dB (A-weighted). That is good enough for voice recording or live mixing at home.

Switchable Pre-Out Levels and Dual Pre-Outs

Owners who use external power amps appreciate the switchable pre-out levels: 1V/3kΩ or 0.3V/6kΩ. This lets you match amplifiers with different input sensitivities and avoid overdriving or underdriving them. Two sets of pre-out jacks (Output 1 and 2) allow bi-amping or driving multiple power amps, a rare feature in consumer preamps of the era. The output stage is direct-coupled, preserving low-frequency integrity.

Passive 12dB/octave Low and High Filters

The low and high filters are genuine passive designs with sharp shoulder characteristics, at 12 dB/octave roll-off at 50 Hz (low) and 9 kHz (high). Unlike many tone circuits that degrade signal quality, these filters can clean up rumble or hiss without introducing phase shift or coloration. They are handy with older records or tapes that have extraneous noise.

Tone Cancel Switch with Flat Bypass

The TA-2000F has a dedicated tone cancel switch that bypasses the entire tone circuit. The response is flat regardless of knob positions. That helps with critical listening or A/B comparisons, since the tone stack doesn't color the sound when not in use.

Variable Turnover Frequency with 2 dB Step Switching

The tone controls are not fixed-curve. The turnover frequency shifts with the amount of boost or cut: 250 Hz or 500 Hz in the bass, 2.5 kHz or 5 kHz in the treble. It uses a variable turnover design where the turnover point moves with the knob position. The treble control offers 11-step switching in 2 dB increments, allowing precise, repeatable adjustments, which was unusual for analog gear of this period.

Integrated Tape Dubbing with Microphone Mixing

With two tape decks connected, you can dub from one to the other by flipping the function lever. You can also mix microphone input into the recording path during tape dubbing. That makes the TA-2000F a basic mixing console, useful for commentary, voiceovers, or live performance recording. It blurs the line between consumer and semi-pro gear.

Dedicated SEPP Headphone Amplifier with Line-Out Capability

The headphone output uses a dedicated quasi-complementary SEPP (Single-Ended Push-Pull) circuit with its own volume control, for strong, clean drive of high-impedance cans. It can also be used as a fixed line output, which is handy for feeding a recording device while monitoring through headphones. Output is 0.6 V into 8 Ω, with an 8 Ω impedance, which suits most dynamic headphones of the era.

VU Meters Meeting BTS Linearity Standards

The dual VU meters are driven by a meter amplifier designed to meet BTS (British Telecom System) standards for both frequency response and linearity. The needles respond accurately across the audio band, not just at 1 kHz. That level of precision was exceptional in a preamp not labeled "broadcast."

Collectibility & Value

No official market data exists from its era, but recent listings suggest strong demand. A tested unit appeared on eBay for $600, while another in "Excellent" condition was listed at $850 on StereoNET. A recap/upgrade/repair kit sells for $165, which points to active restoration. Service manuals, schematics, and owner's guides are available online.

Common issues include aging electrolytic capacitors and potentiometer wear, which is typical for a 50-year-old unit. One owner reported replacing the volume pot after a service, and another started a repair thread over operational faults. Documentation and community knowledge make restoration feasible. Owners describe it as "extremely well built," and some express regret over selling theirs.