Tube Amp Archive

Anyone know what these are worth? Someone is selling a japanese made sigma (he bought it about 35 years ago), comes with a case and in very good condition. I haven't seen it myself yet so dont know the model number.

Hes asking for £50, sounds like a good deal.

I'm going to be building a mark II C+ clone, anyway i'm having trouble finding places that sell push pull pots. I can get the values i need but it means purchasing them from a varity of different sites, and getting a mixed set of pots (some split shaft some solid), its also going to cost a fair bit,...

I'm no expert but i would think it could be anything, the dimmer switch in my room causes unwanted noise when its on. Have you tried turning things off and seeing how it affects the noise?

Clean channel is not overly important and i do quite like the SLO sound.

I've got a stripped down SLO preamp i built, i can always see how it sounds without the clipping stage.

Dumble sounds interesting, i like the idea of having a clean chanel aswell. Looks like it will convert well, was looking for something with quite a bit of drive for my les paul, not too keen on low overdrive humbucker sounds, i use my strat for that. I personally think a strat sounds better for play...

Some people would think i'm crazy, but these amps just dont do it for me. I've got a 50 watt jmp clone and i dont care much for the sound. I'm looking to turn it into something else, thinking maybe a high gain beast or something, problem is i'm limited to 2 valves. Apart from something from the mesa...

I didn't take into the consideration that fact that people get patents on other peopels designs, to do so is just disgraceful.

There does appear to be an issue with the people dealing out the patents then.

Nice to know, you'd get eaten alive on some forums for similar situations.

I'm not trying to patronise anyone by sayign this, but there are many way to interperet written infomation most of you will agree, and reading ones own words will mean different to someone else, and obviously its hard to convey the apropiate tone in a written messege. I'll apologise again to anyone ...

Omar, i wasn't refering to you at all, nor did i intend you to get that impression i am sorry. But i heard that someone had a unpleasent encounter with this Dr Z guy. Not having a go at anyone, just expressing my opinion of the subject. People are allowed to dissagree.

I'm not trying to get any rules changed or having a go at anyone, just bringing the topic to attention. If its getting old i'm sorry, not tryign to upset anyone.

This has been posted in the Carmen Ghia topic but i thought i'd repost with a bit extra, i dont want this to become an agressive argument, i prefer to call it a healthy debate. There is issues with posting current production schematics, or amps by certain manufacturers. Especially Dr Z. Please note ...

Just some interesting info i found regarding patents. Acording to a uk Intellectual Property website. patent: It is a deal between an inventor and the state in which the inventor is allowed a short term monopoly in return for allowing the invention to be made public. Also intelectual property just r...

What i dont get is why its such a crime for peopel to post dr z schematics, since as far as i can see as long as its not his original copyrited material, what laws are being broken, since its perfectly legal for someone to rip off an existing amp and sell it as their own (as long as there is no pate...