SE5 Tube Stereo Amplifier

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RedRoo SE5 Stereo Kitset

The SE5 Stereo kitset $857

1-3 weeks depending on stock

This item is supplied less valves and the power-pack which are readily available from other suppliers. See link above for supplier information.

Professional quality extra thick (2mm) double sided fiberglass PC Boards with extra thick copper tracks (2oz Cu).
Easy to read component designators and values printed on board. Direct mounting of all sockets, switches and potentiometers, together with screw connectors, makes construction easy. 

Always in-stock

Full chassis kit comprising a precision bent, drilled, and powder coated steel chassis, with screen-printed front and back panels.  All hardware provided in the kit. This is an extremely good looking and durable chassis. A blue front panel with white lettering is also available on request.

For those who prefer the wooden look, you can always attach timber panels to the sides. 

1-3 weeks depending on stock

Output Transformer - $106.70 - RedRoo 10W Single Ended Transformer with UL taps, in an attractive steel case. Click to order.
Output Transformer

$106.70 - RedRoo 10W Single Ended Transformer with UL taps, in an attractive steel case.

Click to order.

This is our standard output transformer supplied with the kit. It gives excellent performance in the RedRoo SEs design and aligns with pre-drilled holes in the RedRoo chassis. 

Single ended output transformer for Pentode, Triode and UL operation
Power Handling: 8W (30Hz),
Frequency response (no negative feedback): 15Hz-25KHz, -3dB
Primary nominal impedance: 3.5K with 30% screen grid taps.
Primary copper resistance: about 400Ω (B-P),
Primary inductance: with Measuring equipment CHROMA3302, frequency 1K inductance of 38H
Primary maximum DC current: 100mA
Secondary nominal impedance:  4/8Ω
Core Size: EI66 stack thickness 35mm,
Material: Japan Z11 steel sheet, European oxygen-free copper wire
Dimensions (mm): 83 x 68 x 90 high

(Naturally, there is no reason why you couldn't supply your own output transformers with similar specifications).      

1-3 weeks depending on stock       

Replacement for the standard transformer. Lopent OPT with extended high frequency response in same attractive metal case as the Standard transformer. Lower DC winding resistance gives slightly higher power output and increased loudspeaker damping.
No screen taps - triode and pentode mode only. A good choice if you have audiophile grade speakers and play quality uncompressed source material.

Single ended output transformer for Pentode and Triode operation only,
Frequency response: 20Hz-60KHz,-3dB(Pentode) 10HZ-75KHz,-2dB(Triode),
Power Handling: 10W(20Hz),
Primary nominal impedance: 3.5KΩ,
Primary inductance:  28H(40Hz, 5Vrms, Test machine HIOKI 3522-50 LCR Meter),
Primary Max DC primary current: 75mA
Primary DC resistance: 215Ω
Secondary nominal impedance: 0-4-8Ω,
Secondary DC resistance
: 4 Ohm tap 0.77ohm,8 Ohm tap 1.05ohm
Metal core size:  EI76 thickness 40mm,material:  35H360(H14)
Dimensions (mm): 83 x 68 x 90 high

1-3 weeks depending on stock


This assembled power supply module is used to convert 12V DC to the high voltage required for the tubes. It does not produce any 50Hz hum and, as mains power does not enter the amplifier chassis, it is safer for home constructors. Ideal for use in small Class-A amplifiers up to about 20 Watts. output.

Input voltage: 12 VDC nominal. Current load dependent. 
Output voltage: 115/200/220/280 V AC or DC selectable by links.
Output Power: 150 Watts max. Over 100 Watts requires extra cooling.
Switching Frequency: approx. 40kHz (no 50Hz hum in output).
Optional enable input (for amplifier kill-switch).
Dimensions (mm): 68 x 62 x 28 high.

Always in-stock


 

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