Sony TA-F 670 ES

Data

General

• Manufacturer: Sony
• Model: TA-F 670 ES
• Type: Integrated amplifier
• Years of manufacture: 1991 - 1992
• Made in: Japan
• Color: Black
• Remote control: No
• Power consumption: 260 W
• Dimensions: 430 x 150 x 375 mm
• Weight: 12 kg
• Original price approx.: 998 DM

Connections

• 8 inputs:
  • Tuner, CD, Direct In, Tape 1,2,3, Adaptor, Aux (150mV, 20 KOhm),

1x Phono MM/MC (2,5mV, 50KOhm / 0,17mV, 100Ohm)

• 4 outputs: Tape 1,2,3, Adaptor (150mV, 1 kOhm)
• Additional connections separately switchable for Direct-IN, Adaptor-IN/OUT for Equalizer
• Pre-Out for connection of an additional power amplifier.

Technical data

• Continuous power (at distortion factor)
  • 8 Ohm: 2 x 90 W at 0,004% distortion
• 2x 175 W at 4 Ohm ( 0, 01 % distortion) acc. to DIN

2x 110 W at 8 Ohm acc. to DIN

• Phono input (switchable MM or MC).
• Cinch inputs and outputs gold-plated
• Headphone jack (jack 3,5 mm) gold plated
• REC-Out-Selector.
• Housing is satin black and full metal.
• Attenuation factor: 100
• Frequency response: 10Hz - 100kHz
• Tone control: yes, can be switched off
• Bass: at 100Hz +-7db
• Treble: at 10kHz +-6db
• Loudness: no
• High Filter: no
• Mute: yes, -20db
• Direct/Line-Straight: yes

Special Features

• Rugged chassis, so-called Gibraltar construction, reduces distortion possible due to vibration.
• Large-dimensioned, coiled toroidal transformer always provides sufficient power even for the highest dynamic peaks.

Preamplifier section: Low-noise, high-gain NFB equalizer amplifier. Power amplifier section: Purely complementary push-pull stage.

• Tone control section with exclusively passive components to avoid distortion.
• Power amplifier in super legato linear system ensures high output power.
• With simultaneous A & B speaker operation 8 - 16 ohms, otherwise 4 - 16 ohms.
• Direct input for undistorted reproduction of the signal sound source

Remarks

• Other models of the same series:

• The F670 is nothing more than a pimped version of the F570. So the filter capacitance of both the output stages and the power amp front ends was doubled and additional smoothing inductors were added there. The foil-C in the filter network of the phono preamp now have 100V instead of 50V etc.. The audio electronics, as well as the platinum set is the same. The additionally offered preamp output is a fake and nothing more than a down-amped power amp output, like the headphone output. Whether that is worth the meanwhile quite large price difference of both models in the second-hand market, everyone must decide for themselves.

Pictures

Picture: Sony TA-F 670 ES