DIY phonostage.

[sq225917]

This one's going to a chap in Wales.

[Bksabath]

Just found and read this tread top to bottom ...
Better keep the tech discussion here
Simon what HFE you use for the transistors?
I got several batches going from 340 to 620 Hfe
The last 1000 of each arrived yesterday from Mouser those at Fairchild on tape I have measured a few and the 337 are around 420 t0 490 the 327 are around 360 so pretty useless.

BTW I would be interested in a set of boards for the PSU do you have a spare set?

[Bksabath]

I am not going to moan about Paradise PSU whiteout doing sumtink about it
Consider that hammer and Mig are my tools of choice but ... If you willing to help ...
I am working on those (second version) once finalised I am planning on a small professional run

[Bksabath]

BTW if you need same... I am more than happy to help any one

[sq225917]

Sandro if you want I have a spare set of the psu shunt boards for the paradise.

[Bksabath]

Just sent you Pay pall money

[Bksabath]

Simon
Boards arrived today

Just had quick look
Awesome

Many tanks

[sq225917]

Excellent, the snubber value was measured with the Quasimodo for that exact transformer. You'll need a 10-15r dropper resistor for each rail, depending on your mains voltage.

In the meantime I've been struggling on with No21.


Buffer boards looking tidy with the new machine wound inductors.


You could get a bus under there.



Should be done in a week or so. Still a few parts to arrive. Then I've got to crack one with one for Joachim and that's the last one ever...

[Bksabath]

I've got to crack one with one for Joachim and that's the last one ever...

There was a mention of a super version One suppose is kept secret...

[sq225917]

Yeh, he wants one as a benchmark to use for his new phono stage development. It's a simplified paradise with balanced input stage using monolithic rather than all discrete devices. It makes sense to do a simplified version as the paradise takes too long to match and build to be commercially viable.