- Item: 6EM7 power amplifier
- Type: "Abstinence" - 6EM7 power amp
- Posted: 5 November 2013
- Builder: mwhouston
- Country: Australia
- Comments: 0
Abstinence
Yet another 6EM7 power amplifier. This time some parts were down graded and a different internal layout techniques was used. The initial PS filtering is preceded with a on-board power filter, a 20uf900V elecro and 20H100mA Hammond choke. The HT is supplied by a Hammond power transformer and Sovtek 5Y3 rectifier tube. The second stage of filtering is 47uf and 100uf electros with a large limiting resistor ensure the amp is totally free from of hum and noise. All PS caps are snubbed.
This amp sounds better than the last and I think it may be the Sylvania NOS 6EM7 tubes. Sprague orange drops are used in the inter-stage coupling and once more large NP caps for the bypass on the power tubes. For the first time I have used Chinese made H&K 15W OPTs, can't fault them. The look of the amp is almost under-stated "sexy" and the sound the same - sexy and natural.
This amp sounds better than the last and I think it may be the Sylvania NOS 6EM7 tubes. Sprague orange drops are used in the inter-stage coupling and once more large NP caps for the bypass on the power tubes. For the first time I have used Chinese made H&K 15W OPTs, can't fault them. The look of the amp is almost under-stated "sexy" and the sound the same - sexy and natural.
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