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-2A3

Tubes	2A3 x2, 6SN7GT x2, 5U4G x1
Circuit Design	Single-Ended class "A" operation without negative feedback
Power Output	3.5W + 3.5W
Input Impedance	100k ohms
Input Sensitivity	150 mVs
Output Connections	8, 16 ohms (must chose one) (*1)
Frequency Response	15-30kHz/-3dB
Noise level	less than 2.5 mV
Power Supply	100, 120 and 220-240 VAC can be accepted at 50/60Hz (must select one) (*2)
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.

*1	Since the output transformer has two wires (one for 8ohm, another one for 16ohm) in Secondary, you can change the value with re-wiring from the transformers to the speaker terminals by yourself later. (NOTE: there is only one pair of speaker terminals per channel on the chassis.)
*2	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(JPG67K)