SE5 Tube Stereo Amplifier

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RedRoo SE5 Stereo Kitset with Powder Coated Chassis

'Solderless' SE5 Stereo kitset with black powder-coated steel chassis and screen printed front and rear panels.

This kitset is supplied with all tubes and a medical grade 12V DC power-pack. 

A$1295 (approx. US$940)  3-6 weeks depending on stock

All kitsets currently being shipped with premium Alps R-27 volume control at no extra cost.
Please contact us if you do not require tubes or pre-assembled PC Board.

RedRoo SE5 Stereo Kitset with Precision Top Plate

'Solderless' SE5 Stereo kitset (as above) but supplied with an upper chassis panel using 2.5mm thickness black coated fiberglass, plus the screen printed rear panel.

For those who want to build their own chassis or a DIY timber frame. 

A$1195  (approx. US$860) 3-6 weeks depending on stock

Output Transformer - $106.70 - RedRoo 10W Single Ended Transformer with UL taps, in an attractive steel case. Click to order. (approx US$80)
Output Transformer

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

Click to order. (approx US$80)

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 impedance: 3.5K with 30% screen grid taps. (5k also available)
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


1-4 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.

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

1-4 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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