No no no! With a few tweaks, their sound can rival a McIntosh 275. Browse Joe Curcio's website at: http://www.curcioaudio.com/dynadr_3.htm Joe is a world expert, perhaps THE world expert, on Dynaco 70 amps. I replaced my power tube and rectifier tube sockets and installed Joe's "Quad Cap Module - Below Chassis version". I also rewired the whole darned amp with Joe's Teflon wire kit. I was so happy, the next weekend I drove down to San Jose again and bought Joe's "CAE-3U Driver Stage Upgrade Module" with the polypropylene capacitor and DC bias options. Even my wife admits the sound is good. If you truly truly are contemplating trashing your amps, contact me. I would love to get a pre-amp. Likewise, I have a friend who wants to get into tubes and everyone needs a ST-70. ... did someone say "off topic"?