jose

Yes, you can change r500 (next to Trimpot) for other from 620 Ohm to 1K.

Thanks Birgir but both are very difficult to find too. I´m working on my Megatron and checking the threadt I found references to STN9630 and KSA1156 but I would like to be secure.

To replace the 2SA1968, which is the best option? The STN9360 or the KSA1156? *STN9630 is SMD (I have boards for adapt this to TO220). *KSA1156 The Pins are the opposite, you just have to rotate it.

Not always ... this winter has been hard. Many storms, strong winds... we have had up to snow for a few months Fortunately, climate change is a lie... or so they say

If it´s posible, I like blue

Spring is here....[emoji41]

good question

I measured all my BC556/546 BTA stock: hfe from 299 to 416 but the most abundant value is in the fork from 320 to 380. I don´t know whether to do it with these values. I have 100 BC546CTA bought in Mouser too and today I found a guy who bought him another 100 units of the BC556C ... I hope to be lucky.

I buy all my sand on Mouser and They say that for example On/Fairchild BC556BTA grade has a measure of HFE/450. I have around 200 eas on my warehouse I need some time for measure some units but I guess that they don't lie... or this I would like to believe. Edit: I'm seeing that I have some KSA992FTA/KSC1845FTA but yes, Pars is right; It's a shame they have different pinout.

Finally, can BTAs work?

John Pizzarelli trio "live at birdland"

I bought 35 of each one for this proyect. I like to have reserve inventory.

Happy Birthday!

Happy Birthday!

E.S.T "Seven Days of Falling"

Some model of Emission Labs maybe?

Happy birthday Steve!!!!!

Doing a spreadsheet is a great way to share information about the behavior of the amp. Thanks Pars

It may seem silly, but I prefer the usual Neutrik rca´s: simple, robust and of good quality at an appropriate price.

Chet Baker Sings

They have arrived;

happy birthday!!!!

I have a nice collection of Bach cello suites but probably it's on my top ten. Jean-Guihen Queyras

Manolo Garcia. "Arena en los bolsillos"

I'm not very good at this but seeing the scheme led 1 is directly powered by the diode bridge and and the negative side is connected to KPS92. I would look there first.