bbest

Unfortunately LT1236 has also insane price. SUPSIC produces GC2M1000170D 100% the same specs as C2M1000170D, costs 1.5$.

C2M1000170D produced by SUPSIC and Inchange Semiconductor. But don't know if they are reliable or not. PS: Is it possible to replace costly LT1021DIN8-10, something with Negative Shunt Reference (only 2 active pins)?

Repairs. Of cause it was some problems (for T2 this is normal, nothing special). It was successful first run. But after some modifications I had bad connection for tubes filaments 6.3V. * so fried couple times 2SK216 + went to rip 4-6pcs LTL-4221NLC. Silent dead, no sparks. * PSU lines -500V, +500V (not alone here, other members had same problems): zener 24V, 2n3904, fqpf8n80c. Thanks all who helped in repairs.

Hello everybody! Almost finished T2 started in 2022. It was very funny and pleasant build, very interesting. For base I took PCB developed by jamesmking in 2020. For me it was most convenient layout, it is possible to rearrange in case two channels. Plus no absolete elements. In this build changed: * DC offset resistor R64 from 510 to 649Ohm * 2SJ79/2SK216 on TTA004B/TTC004B * FQPF8N80C on STP8NK80Z Some pics Amplifier. TTA004b/TTC004b And PSU More pics here https://cloud.mail.ru/public/mHh6/ktC6SknZ5 Thanks jamesmking, JoaMat and other guys for help in assembling.

Hello all! Same question - how to replace it or where to buy? May be something from this: * FQP8N80C * STP8NK80Z * STP7NK80Z ?

all good, but output capasitance 60pF vs 11pF.

Hello all! Now FJPF2145 obsolete on Mouser. But I need to finish my T2. Where it is possible to get or how to replace them? What you think?

Not exactly resistance - different lengths of second's wires. Very pure sound after this TVC, especially on low level volume.

PSU for both: Carbon and GG (Ground Grid). With delay board for tubes filaments. Compact 22AWG wires can handle 700v DC, double shielded.

Read many good reviews on such kind of DACs, so get latest version of boards dam2941-12. Wanted to power it with Salas Reflektor-D and Salas UltraBib.b.

And what difference between CFA3 and Dynahi? My balanced Dynahi seems more rude, more simpler then beta22. Last one very close to electrostatic sound.

Have you heard beta22?

I just had 2004 boards from another guy and finished the project. And I am not sure what is the best for isodynamic headphones: CFA3 or Dynahi_2004.

Assembled my balanced Dynahi old version of 2004. Using it with HiFiman HE-6. Sound: entertaining, opened, dancing cheerful. Compared it with beta22. Have only couple of questions: * does it make sence to change main capacitors from Panasonic FC 470uF on Nichicon KG 680uF * DC offset without opamp +-10mV, with opamp OP27 +-2mV. Is it ok, left as is or try to make it better by changing on opa134 or something like this * does it make sence to make some other mods What you think?

Not so far ago it was expected in JUL-23 on mouser, but now shift to 19-Aug-24. So only stn0214. here said https://www.mouser.com/PCN/onsemi_Generic_PD24419ZB.pdf it could be replaced on FQP8N80C, but mouser also suggested STP8NK80ZFP

some intermediate results of PSU (followed by jamesmking assembly) Used 0.5mm transformer wires for AC HV (red ones): compact and reliable.

tiny mistake: FQPF8n80s -> FQPF8n80c. But anyway, FQPF8n80c completely obsolete. May be it make sence to change it on FQP8n80c. PS: compared to previous gerber version fixed wrong silk for IXCP10M90S: KAG -> GAK, good 👍

very strange, now mouser shows for IXCP10M90S

Mouser has changed delivery date for IXCP10M90S on 08-Aug-2023. So where to buy it?

I have 4 sets of T2 boards of morden jamesmking's design. If smb wanted just pm me.

you mean this one https://www.mouser.com/ProductDetail/STMicroelectronics/STN0214?qs=pmcUWs1B1IKOCzUPe9wAgg%3D%3D stn0214? So tiny

so may be find some analog for KSC5026MOS, on Aliexpress some shops try to sell 1pcs for 24$ 🤔

I also needs KSC5026MOS, for T2. On mouser it will be available in summer of next year. How know where to buy it ...

Hello! I could get now DynaMight 4pcs boards version 2004. Does anybody know is there any difference for balance amplifier between: DynaMight and Susy Dynahi v 1.43?

There are custom TVCs from some Russian DIY master. Those one are balanced.