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-300BTE

Tubes	300B x1, 6SN7GT x1, 6V6GT x1, 5U4G x1
Circuit Design	Single-Ended class "A" operation without negative feedback
Power Output	6W
Input Impedance	100k ohm
Input Sensitivity	150 mV
Output Connections	8, 16 ohms
Frequency Response	20-23kHz/-1dB, 16-26kHz/-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	W360xH210xD270 mm
Weight	13.5 kg

this specifications are subject to change without notice.

300B tube is driven through the interstage transformer.

*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)