Softone's AUDIO PRODUCTS

The vacuum tube amplifiers play gentle and mellow sounds.

You spend a restless life now, don't you? In a technological age, you have to deal with many new difficult things. When you take a rest and listen to your favorite music, why don't you enjoy gentle and sentimental sound that transcends the times?


Model8 Stereo Power Amplifier


Model8-300B

Model8-205D

Class A single ended operation.
300B or SG-205 can be selected in the output tube.
Model8-300B 8W+8W
Model8-205D 2W+2W
Three stage direct coupled and fixed bias circuit.
High quality R-core output transformer and R-core power transformer.

Introduction of Model8 Stereo Power Amplifier
Technical description of Model8


Model7 Stereo Power Amplifier

16W+16W Class A push-pull operation.
RCA Unbalance input and XLR Balance input.
EL34, KT66, 6L6GC, KT77, KT88, 6550, and 350B@can be used by no adjustment.
High quality R-core output transformer and R-core power transformer.

Introduction of Model7 Stereo Power Amplifier
Technical description of Model7


Model5 Selector & Attenuator

Pure sound quality and high reliability
Model5 offers the best input selection, volume control, and balance control function.

Introduction of Model5 Selector & Attenuator
Technical description of Model5


Model4 Phono Equalizer Amplifier

For a better playback of a precious analog disk.

Introduction of Model4 Phono Equalizer Amplifier
Technical description of Model4


The Digital to Analog Converter for 96KHz 24bit sampling,
Model_2 tube D/A Converter


Introduction of Model_2 tube D/A Converter

Technical explanation of Model_2 tube D/A Converter

DVD player for 96KHz/24bit sampling digital output


FRONTBOX Kit for ANALOGDISCOVERY

Discontinuing product, Only the stock.

FRONTBOX makes ANALOGDISCOVERY the same easiness as a general measuring instrument.

Introduction of FRONTBOX for ANALOGDISCOVERY


R core Audio Output Transformer

We have introduced R core for this new audio output transformer. R core is a new type of magnetic core for transformer and now increasingly used for power transformers because of its performance advantage over the other conventional magnetic cores. Both transformers for push-pull and for single-ended are available.

RX-30-8 Push-Pull 8,000 ohms 30W type
RX-40-5 Push-Pull 5,000 ohms 40W type
RX-80-5 Push-Pull 5,000 ohms 80W type

RW-20 Single-Ended Universal 20W type
RW-40-5 Single-Ended 3K / 5K ohms 40W type
RW-40-9.5 Single-Ended 5K / 9.5K ohms 40W type

The right on the photo is the R core output transformer in bare condition. The product is enclosed in the square case on the left.


R core Interstage Transformer RC-20

Multipurpose interstage transformer promising versatile operations

RC-20 Interstage Transformer

The right on the photo is the R core audio interstage transformer in bare condition. The product is enclosed in the square case on the left.


MC CARTRIDGE STEP UP TRANSFORMER PLT-1

PLT-1 is a step up transformer for MC cartridges. It is suitable for MC cartridge of an impedance 10 ohm and a 40 ohm.

PLT-1 MOVING COIL CARTRIDGE STEP UP TRANSFORMER


MS-2a Chassis for monaural amplifier

MS-2a is a suitable chassis for producing 300B, 2A3 and 45 etc monaural amplifiers with R core transformer.

MS-2a Chassis for Single ended and Push-pull monaural amplifier


Application Notes using R core Audio Transformer

SV811-3 Single-Ended 12W Monaural Power Amplifier

Building amplifier project using RC-20 Interstage Transformer, RW-20 Single-Ended Output Transformer, and MS-1 chassis. This is a very beautiful tube amplifier with power tubes SV811-3 brilliant like electric globe. This is a high power amplifier that outputs 12W being 50% more than 300B. The main feature, however, is first and foremost easy to build by its configuration of both the power supply voltage less than 500V and the inexpensive parts commonly available in the market.

2A3 Push-Pull 20W Monaural Power Amplifier

Building amplifier project using RC-20 Interstage Transformer, RX-40-5 Push-Pull Output Transformer, and MS-2 chassis. This amplifier realizes 20W high power output and excellent performances (low distortion, wide bandwidth, high output, and low noise level) that are difficult to be achieved by the single-ended amplifier. The main feature is well balanced sound quality based on straightforwardness and well-developed mid and low range particularly characterized by interstage transformer coupled circuit.


Ordering the audio products (DAC, Phono Equalizer, Selector & Attnuator,Amplifier)

Ordering the audio transformers, Chassis, Kit


eMail: softone@nifty.ne.jp Questions, here


The relationship Softone and ICL

Softone, Inc.

11-5, Sakuradai, Aoba-ku, Yokohama, Kanagawa, 227-0061, Japan

E-mail address: softone@nifty.ne.jp
Facsimile : +81-45-989-4642

Copyright(C)2000-2013 Shoichi Yoshimoto