SONY TA-F555ESII

Commentary

This pre-main amplifier is based on circuit technologies such as Audio Current Transfer and Super Legato Linear based on the concept of simplicity and straightness, with brush-up down to the details.

It uses an audio current transfer system in which a total of four amplifiers are electrically independent, one for the preamplifier, one for the power amplifier and one for the left and right channels.
This makes it possible not only to pursue independent characteristics for each part, but also to ignore the contact resistance of switches and connectors and the inherent impedance of wires.
In addition, the Linear Gain Control Attenuator, which can be used with the audio current transfer method, is used for the volume to improve various characteristics at a general listening level.

The power amplifier uses an ES filter to eliminate power source interference, and Sony's super legato linear system to reduce switching distortion and crossover distortion.

In addition to audio Line 5, it is equipped with two video input systems.
Video dubbing from Video2 to Video1 can also be done with one touch.

Low noise Hi gmFET is used in the phono equalizer amplifier for MC cartridges.
In addition to the above, we have introduced many parts such as internal wiring materials using LC-OFC, copper-plated chassis for eliminating magnetic strain and vibration strain, large-capacity condenser, large heat sink, and side wood.

Equipped with a standby indicator that blinks to indicate the muting status until the amplifier moves to stable operation after power is turned on.

Equipped with a cartridge load selector to which MC cartridge (40 Ω / 3 Ω) can also be connected.

Equipped with a direct switch that passes through the tone control circuit.

Equipped with speaker protection circuit.

Model Rating

Type	Stereo pre-main amplifier
Rated output	180W + 180W (20 Hz to 20 kHz, 0.008%, 4 Ω)
Harmonic distortion factor	0.002% (8 Ω, 10W)
Signal-to-noise ratio	Phono MM:83dB Phono MC:73dB
Dynamic range	120dB
Pwer	100 VAC, 50Hz/60Hz
Power consumption	275W
External dimensions	Width 470x Height 135x Depth 425 mm
Weight	17.5kg