TRIODE 88Signature

Commentary

Tube type stereo pre-main amplifier using KT88.

KT88 parallel push-pull circuit configuration is adopted.
In this configuration, the maximum output is 140W + 140W, but with the 88 Signature, it is limited to 70W + 70W for long-term stable operation. This allows for a more balanced output over the entire bandwidth.

Switching between UL connection and 3-line connection is possible.

Equipped with 2 Ω output terminal, it is also compatible with the drive of a hand impedance speaker.

The power supply is equipped with independent transformers on the left and right sides to eliminate mutual interference between channels.

The internal layout is a fully symmetrical monaural symmetric configuration.

A pre-in connector is provided so that it can also be used as a power amplifier.

Uses an input / output protect circuit.

TAOC special order insulators are used for the legs.

High-grade power supply cable μ -PS15 of Furukawa Electric is used for the cable.

Model Rating

Type	Tube type pre-main amplifier
Maximum power output	UL Connection : 70W + 70W 3-Line Connection : 35W + 35W
Frequency characteristic	20 Hz ~ 40 kHz + 0 -1dB
Total harmonic distortion factor	Not more than 0.1%
Signal-to-noise ratio	Line:90dB Phono:87dB
Input sensitivity	Line:0.4V Pre in:0.6V Phono MM : 3.5mV/47k Ω
Input	Phono : Route 1 Line : 2 lines Tape : 1 system
Output terminal	Speaker output : 2 Ω, 4 Ω, 8 Ω Rec out : 1 system
Pwer	100 VAC, 50Hz/60Hz
Power consumption	No input : 220W Maximum output : 450W
External dimensions	Width 480x Height 210x Depth 440 mm
Weight	37kg