DIY phonostage.

**sq225917** · 10-09-2017, 08:06

I've never used under 400.

You can set the curve trace range on the pc 1-14ua is ideal.

**mac72** · 10-09-2017, 21:15

What's the best/latest transistor choice for Calvins buffer, manuals states :
Q3,Q6 - 2SA1381
Q1,Q4 - PF5102
Q2,Q5 - J107
thanks

**sq225917** · 10-09-2017, 22:32

That's it. The j107 and pf5102 need to be matched though.

**mac72** · 11-09-2017, 05:54

Thanks , where did you get 2SA1381 from , Mouser don't seem to stock these

**sq225917** · 11-09-2017, 09:25

They don't. KSA1381 is a replacement part, or any of these with adjustments to these caps.

BD 140 (Suffix -16) ( C1,C2 = 180-220pF)
MJE/MJD 350 ( C1,C2 = 100-47pF)
2SB 649/A (Suffix C oder D)
2SA 1930 ( C1,C2 = 180-220pF)
MJE 253 ( C1,C2 = 47-22pF)

**mac72** · 11-09-2017, 09:36

Thank you Simon

**mac72** · 17-09-2017, 07:34

What's the best place to get matched pairs of 2SK170, please?

**sq225917** · 17-09-2017, 08:10

http://stores.ebay.co.uk/Himmels-Roh...p2047675.l2563

There's a few others with legit parts but 99% 0n eBay are fake. This guys are legit and well matched, I've used him for years.

**sq225917** · 17-09-2017, 08:12

Get the BL grade

**mac72** · 17-09-2017, 09:55

Originally Posted by sq225917

Get the BL grade

Thanks , I will

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