Diefet Debug - Massive volume drop?

[trad3mark]

Hello all!

I'm making a diefet at the moment, and it's all going really well, up till the opamp. I'm working off V.1.3 of the diefet by the way.

When i go to debug, using the output probe method, i get a good singal right the way through, up till the opamp. I'm still getting signal, but the volume drops to about 5% of what it was. It's perfect up till the first connection of the op amp which is about where the 39k connects into it.

It's possible that it could be the op amp. The shop didn't have any TL072's or TL082's, so my options were a TS393CD or a TS27L2CN. I went with the TS272L2CN, just cos it was the first one i grabbed. It does say it's a "Very low power dual opamp" could it be that it's just not powerful enough? Would the TS393CD be better?

Any help would be appreciated.
Cheers,
tm