Should I upgrade my adcom 750 w/black gate caps

Has anyone heard or have owned a modded adcom 750 w/black gate caps upgrade. Is it worth the money. And how does the mod sound after a few weeks of break in compared with a regular adcom 750. Also looking in to upgrading my amp with a Parasound Halo A21. Has anyone heard this combo? Any thoughts? Any info would be great.
save the green and buy the good one,changing the cap wont make the magic.
Are you talking about an Adcom GCD-750 or the GFP-750? If it is the GFP-750, do you use it in active or passive mode? Sean
I'm talking about the preamp. I use active mode all the time.

What would you suggest used on audiogon with $1000.00 spending cash.
I can't comment personally on the Black Gate upgrade but at the $ 1000 dollar mark very few preamps will compare w/ the GFP-750. If you can live w/o the convenience of the remote
and HT pass through, than you may want to look at the Audible Illusion M3A or if you don't have a need for vinyl their L1 preamp. For a little more green than you could pick up an older Sonic Frontiers SFL2.
Good luck...
I am a newbie to this site, and I am researching to put together a good "budget" system. I cannot comment on the original question here but would like to ask a different one. Sean asked if "you use it in active or passive mode?", could someone explain this, I have no idea what this means. Thanks.
One of my friends ( Lou S. ) that posts both here and on the Asylum has experimented with caps to a great extent. His findings are that Black Gates bypassed with Reliable Cap RT or RTX series caps work best. The Black Gates by themselves tend to lose high end "sparkle" and extension but work quite well in terms of improving bass impact and midrange liquidity. Whether or not you find it to be worth the money invested may depend on the rest of your system, your listening skills and what you expect to achieve. Sean
In regards to the Black Gate capacitor mod to the Adcom GFP-750, ask members 'Lmack' and 'Mitch2' about it.I think both of them had this mod done to the Adcom GFP-750's at one time or another.
Tgi: Passive mode simply turns the GFP-750 into a "switchbox" for what source ( CD, Tuner, Cassette, etc...) you want to listen to. There is no signal processing in terms of potential for gain ( added volume to what already exists ) or tone controls, etc.... You can alter the balance of the signal and you can attenuate ( turn down ) the level of signal that the original source device is feeding to the amp. Since most line level sources ( tuner, cd, dvd, cassette, etc... ) put out enough voltage to directly drive an amp, some people go this route as they think that adding additional circuitry only "clouds" the signal.

Turning the GFP 750 into active mode, additional circuitry is added to the signal path while retaining all of the original switching capacity that the unit previously allowed. The added circuitry adds gain ( increases volume ) and helps stabilize the impedances of the system. This allows one to run longer runs of cabling and / or potentially reduce issues with impedance matching.

There are benefits to using both methods and units such as the GFP 750 and a handful of others allow you to select which one you want to use at the flip of a switch. Sean

PS... Line level typically refers to any type of component that is not phono related. Phono systems put out very little signal and require an added gain ( amplification ) stage. Once the very weak signal is amplified, that signal is then fed into the line stage like any other "line level" device. As such, you can't run a phono system in passive mode because there just isn't enough signal to directly drive the amplifier.
Sean: Thank you, for taking the time to answer my question with such detail. Greatly appriciated. This site is very interesting and informative.
read my thoughts on the A 21 on Audioreview; unreal amp, fabulous, can't imagine it not being a huge improvement