PP-EL34/6550/EL-PL504 or KT88 Bal. innput

[AndersN]

Hello everybody, I am planning to build a pp-amp with balanced input, maybe EL34 / 6500/ El-PL504 or KT88. (25-50W?) I have speakers with 88-89dB sensitivity and I have dac with bal. output and bal. preamp. Does anyone have any good suggestions? Not a kit, I do metal work and connect myself, I've built tube amp/preamp before 🙂 Best Regards to all diy-tube-friends from Anders 🙂

 

[jazbo8]

Pete Millet's Push-Pull KT88 / 6L6GC / EL34 / 300B / 2A3 amp with "universal" driver PCB. Get his PCB or make your own PTP wiring.

 

[jazz]

Hi,

Have a lookat Allen Wright's pp1c and pp2c. Both have been discussed here.

 

[AndersN]

Thanks so much, Allen Wright's pp1c looks ok, and I think I have most of the parts 🙂

 

[tinitus]

I would say it depends on how much signal gain you get from your balanced preamp

 

[jazz]

Hi,

Just a quick note. build it with kt88's for about 25 watts. The el34 will only deliver 15 even though that would be enough for me with such speakers.

Joris

 

[lordoff]

Anders, why not Allen's PP2C? I fallen in love with this design 🙂
Or go expensive - use input and interstage transformers!... OK, you can get some nice inspiration from Kevin Carter, K&KAudio

 

[AndersN]

Thanks so much for the good advice, pp2c looks really good 😉 looks ok to build, thanks. AndersN

 

[NicB]

Hi, did you ever build this amp? I am thinking of building it myself.

 

[vtr]

yes i use it

Hi, did you ever build this amp? I am thinking of building it myself.

in 2 versions first i modded a dynaco mono block with kt88 and changed later to 300b.

and my small/spare amp is a v81 irt broadcasting e84l amp modified similar to the pp2c amp

ask johanna-allens wife if she sells the building map.

klaus