All of the transformers are specially manufactured by Tamura Corp.

Since these transformers 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-VT25Limited

Tubes	VT25 x2, 6SN7GT x2, 5U4G x1
Circuit Design	Single-Ended class "A" operation with negative feedback
Power Output	1.3W + 1.3W
Input Impedance	100k ohms
Input Sensitivity	200 mVs
Output Connections	8 ohms only
Frequency Response	20-20kHz/-3dB
Noise level	less than 1.0 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	16 kg

this specifications are subject to change without notice.

This model is a limited version. (which means an amplifier made to order.)

*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(JPG61K)