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Musik007 6th August 2010 05:01 PM

Desktop Series continued...
 
2 Attachment(s)
It is always very hot during July and August in Hong Kong. The outdoor temperature is over 34 degrees in day. People may not want to listen hot big tube amplifiers in hot summer. The small powered tube amplifiers are not so hot and more safe. So we continue to produce our desktop series. A new baby is coming...

Musik007 6th August 2010 05:17 PM

2 Attachment(s)
What is it?
It is a mini tube amplifier. In the beginning, we designed this 3-tubes amplifier without a tube rectifier. Less heat. Since we succeed to make ECC85-6L6 single end, read Mark's review, we believe ECC85 is able to match 6V6 as well. So we did it, the circuit is more simple, a single ECC85 pushes 6V6 in class A single end. 4.5W output power is achieved at tetrode connection. Thanks Thomas. He made a new nice amp.

Musik007 9th August 2010 05:12 PM

1 Attachment(s)
Direct signal path (one input) is the best.

Musik007 12th August 2010 02:55 PM

Smart looking.

http://i30.photobucket.com/albums/c3.../85-6V6-01.jpg

http://i30.photobucket.com/albums/c3.../85-6V6-02.jpg

http://i30.photobucket.com/albums/c3.../85-6V6-03.jpg

Musik007 12th August 2010 05:48 PM

2 Attachment(s)
These are RCA smoked glass 6V6GT and Valvo ECC85 I keep. They are well matched and the overall sound of the amp is smooth, detailed and musical when pushing Mark Alpair 6 and CHR-70 bookshelf.

Musik007 13th August 2010 09:36 AM

The price of this desktop 6V6 SE is USD298 including Chinese 6N1(=ECC85) and 6P6P(=6V6GT). If replace Valvo ECC85 and RCA 6V6GT, just add USD52 with total USD350, you will have wonderful sound.

Musik007 13th August 2010 02:27 PM

2 Attachment(s)
The heavy duty 120W EI 86 power transformer is not hot even for long time use in summer. The choke is 10H/150mA for CLC filter.

Musik007 14th August 2010 03:25 PM

3 Attachment(s)
The output transformers used for this 6V6 single end is EI 57 x 30 mm with output 5W.
Primary impedance: 5K
Secondary impedance: 0-4-8 ohms
Primary current: 50mA
Inductance: 26H
Frequency range: 35Hz-20KHz

Musik007 17th August 2010 04:02 PM

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AC input: 220V

Musik007 20th August 2010 04:32 PM

3 Attachment(s)
The speaker outputs can be easily selected 4 ohms and 8 ohms on a switch.


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