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The 300B originally designed by Western Electric in 1933 as the 300A and in 1938 the 300B.
It was primarily used in telephony and then fitted to theatre amplifiers .
The 300B design has a magical midrange quality , reproduction of human voice is very lifelike .
We have combined the 300B now with Ultra High end Nickel Permalloy 50 DOUBLE C CORE output transformers with copper or pure Silver windings .
Pure Silver Foil coupling capacitors .
The positions of singers and instruments are pin point accurate and move in harmony as they shift across the stage.
Full bass lines and leading edges of notes are pristine in their reproduction.
Strings and woodwinds are presented in full bloom , layered and textured with a beguiling sense of realism aided by top of the range of Silver foil coupling capacitors.
The toroidal power transformer is very low in spurious emissions allowing for very quiet operation combined with Coleman DC regulated heaters provide no audible hum at all, perfect for high efficiency speakers.
GZ34 Tube rectified .
We are now offering new production Western Electric 300B tubes as an option as well as an integrated version with dual input / Volume control.
7N7/ 6SN7 driver tube .
New Look Black Anodise Chassis available .
Legacy Hashimoto or Tamura output transformers still an option .
Standard Frequency Response 8Hz - 60 KHz -2dB
Distortion @ 1Watt: <0.1% No Feedback
Sensitivity: Variable >500 mV Full output with 7N7
Noise: < (CCIR) – 90 db
Please refer to Pricing TAB for output transformer options .
Suitable high efficiency speakers for the SE 300 B
High efficiency speakers including Horns or full range drivers including, Fostex , vintage Tannoy's , Goodmans ,Corals and Lowthers .
We have upgraded our output transformers to %78 Nickel Cores custom made for us by SOWTER TRANSFORMERS from the UK .
This amplifier will except 45 or 2A3 tubes , only the hum pot's need to be adjusted on the top of the chassis .
This Amplifier is a stunner when it comes to clarity and correct timbre of musical reproduction .
The quality of tonal accuracy produced by this product is stunning , you will want to listen to your favorite artist for hours ,its as if they are in the room !
Jupiter coupling capacitors !! PSC Audio Silver or Copper point to point internal wiring , no mass produced printed circuit boards.
Back up servicing in Europe is available .
EZ81 rectifier tube choke regulated.
A simple passive Volume control for operation with a CD or DAC input is all that is needed , no active pre amplifier is required .
Standard Frequency Response 10Hz -80 kHz , 9dB headroom.
Distortion @ 1Watt: <0.1% No Feedback
Sensitivity with 12AT7 1.5v 45 tube Input giving a full output of 2.5 WATTS .
Sensitivity with 12AT7 1.3v input 2A3 tube gives 3.5 watts
Noise: < (CCIR) – 90 db.
A legacy SE300B with Tamura output transformers , dual input / with remote Volume control .We can supply Tamura F2007 output transformers with our 300B amplifiers .
Takatsuki TA-S01 use a version of the F2007 and our integrated version is 1/3 the cost and Western Electric tubes can be ordered with ours also .
Custom made output transformers by Sowter UK .
The Famous Kondo Ongaku 211 uses this technology & we don't charge their crazy prices .
Film cathode capacitors , 10 turn vishay hum pot for SE45 amplifier & custom pure silver wire.
AUDIOPHILE QUALITY
Nickel Transformers .
Hashimoto Transformers as a legacy bespoke model only .
Dale Non Inductive WW Resisters.
Shinkoh Tantalum Resistors.
Amtrans AMRG Resistors.
If a volume control is requested a Precision Electronics Corporation Carbon Close Tracking Potentiometer
Main Power Supply Capacitors are low ESR CDE/ UNL brand .
Neotech OCC copper and PCS Audio pure Silver wire option .
Silver Plated RCA and Heavy Gold Plated Speaker Terminals.
AC heaters - 45 & 2A3 - Vishay 10 turn hum pot followed by a fine adjustment pot on the Hum cancelling circuit optional.
Rod Coleman Constant Current Source Heater Supplies for the 300B .
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