All of the transformers are specially manufactured by Tamura Corp.

Since these transformers (except for the interstage) come with lead wires, it's easy to assemble.

A hard-wired is used for all of the circuit. (which means no Circuit Board.)

Specifications for SV-KT88PE

Tubes	KT88 x2, 6SN7GT x1, 5U4GB x1
Circuit Design	Push-Pull-Ended class "AB" operation without negative feedback (Operated in Ultra Linear mode with KT88 tubes)
Power Output	30W
Input Impedance	100k ohm
Input Sensitivity	1.5 V
Output Connections	8, 16 ohms
Frequency Response	20-20kHz/-3dB
Noise level	less than 1.5 mV
Power Supply	100, 120 and 220-240 VAC can be accepted at 50/60Hz (must select one) (*1)
AC Connector	Equipped built-in noise filter with detachable AC cord
Dimensions	W360xH190xD270 mm
Weight	13.5 kg

this specifications are subject to change without notice.

KT88 tubes are driven through the interstage transformer.

Also, KT88 tubes are operated in Ultra Linear mode.

*1	Now, we deliver all of our SV-amplifiers except SV-300BSM with exchanging among three kind of power transformers just like below in order to be used for all over the world.
	1) 100V version 2) 120V version 3) 220-240V version

The full size picture(JPG58K)