threshold amp

oops in response to your reply prince thhe amp sounds real good.the thing is its 35 yrs. old or so and ive read all over the place that these amps all sound great but are in need of a doctors appointment and also with new parts and better more modern parts these amps really kick butt.if memory serves me upgrades included rebuild front end/ new caps with higher value /set bias bias controls/ new rectifier diode/output transistors/emitter resistors/main caps circuit board caps /binding posts/ rcas etc.. just about rebuilding the whole thing. my mistake maybe ,is theres later models for sale out there that hes done this to already that sell for less than mine. possibly some pure class a ones.

modest stuff.threshold stasis 3 /Conrad Johnson premiere 17 pre / meadowlark osprey speakers/ah njoe tjoeb cd tube player with upsampler

I think $900 was too much to pay. Unload it and go with something else, new or used. My opinion.

"04-11-15: Glasspak
modest stuff.threshold stasis 3 /Conrad Johnson premiere 17 pre / meadowlark osprey speakers/ah njoe tjoeb cd tube player with upsampler"

It looks like a fairly well thought out system. "Modest" components, that are properly matched, will almost always outperform expensive components that are not. The only thing I see that may pose a problem, is how well your balanced amp works with your single ended preamp. And I'm not saying there's a definite problem. Its just something to be aware of.

Something else you may want to consider, is to just use the amp as is. You say it does sound good. When you find an amp that you like better, upgrade to that instead. Also, if you leave the amp stock, you should be able to get more money for it when you go to sell. The only exception would be if you had Pass do the mods, instead of going after market.

I agree with Zd, particularly his comments on "modest" systems, yours seems quite nice. Also, does your preamp invert polarity (many CJ models do)? If so, make sure you reverse your speaker cables (plus to minus) if you haven't done so already, that may make a difference.

If you like the sound of the amp the upgrade sounds like a good deal principally because you'll have refurbished all the parts that can go bad (I don't know about the sound quality difference). Just realize that you're not getting your money back from the upgrades, just musical enjoyment. That may well be worth the investment.