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Bravo Audio - funny looking little tube amps - Page 110

post #1636 of 2613

Thank you very much for the quick reply.  I was only able to get to 12.5 with both channels about the same.  If I go to 13.5 on one channel, the other channel only goes to about 11.5-12v.  Increasing one channel decreases the other, so that to get both about the same, I had to settle for 12.5.  Will this do?

post #1637 of 2613

Hi!

I have a slight problem. I hear "buzz" from the amp when I turn the volume knob just over 11 o'lock. This happens as well when I unplug the interconnect cable, so that can't cause this.

The tube is an Electro Harmonix one.

The wierd thing is, when I touch the metal jack plug of my headphone, the buzz stops. It also stops when I squeze one of the two metal poles in the front. (the ones that hold the "case" together) It sounds like a grounding problem to me. I am not really an expert on electronics, so please tell me what to do! Thanks

 

Update: Just out of curiosity, I plugged a noname microphone to the 3,5 jack in, and the buzz is gone. Obviously, I can't listen to music like this, but it might help to determine the problem.


Edited by moltam99 - 8/12/11 at 5:37am
post #1638 of 2613
post #1639 of 2613

They don't seem new to me and the pins look bent...

Look for some RCA 12AU7 CONN clear tops like these: http://cgi.ebay.com/RCA-12AU7A-CLEAR-TOP-PAIR-ECC82-CONN-TEST-NOS-/330601519011?pt=Vintage_Electronics_R2&hash=item4cf962d7a3


Edited by Ultrainferno - 8/15/11 at 4:10am
post #1640 of 2613

Need to replace the AC/DC adapter to my Indeed 6922EH tube amp.

 

Model # SDK-0609

specs

Input 100-240VAC, 50-60Hz 1.8A

Output DC 24V -2A MAX

 

Any idea on who would stock this (U.S.A.) or

what other products might use this AC/DC adapter? (to narrow the search)

post #1641 of 2613

garage1217 sells a nice p.s. for the indeed/bravo/sunrise project.

http://store.garage1217.com/diyhisuki.html

 

jeremy also has a nice upgrade kit for the indeed/bravo as well as the much superior project sunrise either in kit or assembled form.

post #1642 of 2613
I was looking to buy one of these for fun the other day, so if it's possible can someone comment on how the bravo v2 tube amp will measure up against these:

http://cgi.ebay.com.sg/ws/eBayISAPI.dll?ViewItem&item=260795094655&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

or these?

http://cgi.ebay.com.sg/ws/eBayISAPI.dll?ViewItem&item=250882756656&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

I have no knowledge in circuitry and the likes so they all pretty much look the same to me...
post #1643 of 2613

http://www.ebay.com/itm/Bravo-Ocean-Valve-Class-Tube-Headphone-Amplifier-pre-/260861230146?pt=LH_DefaultDomain_0&hash=item3cbc8a7c42

 

Has anyone seen this one? It looks a bit more appealing as it's enclosed and to be honest isn't a bad looking amp minus the fact that I'm not sure how you change the tube.

post #1644 of 2613

Did anybody already test this one: http://www.ebay.de/itm/6N11-Amplifier-Pro-Hi-Fi-Class-A-Tube-Headphone-AMP-Earpiece-Audio-Red-Demon-NIB-/320775316425?pt=LH_DefaultDomain_2&hash=item4aafb2e3c9#ht_4870wt_1398

 

It's labeled XY Hi-Fi 1.0 but I cannot find any infos in the web. I like the fact that all inputs are on the back while headphone jacks and power switch are on the front.

post #1645 of 2613

And another one sold as DIY kit:

http://nixiekits.eu/MiniHeadphoneAmp.htm

 

There are some measurements shown, that compare the Mr. Nixie to the Indeed.

post #1646 of 2613

R: Bravo Audio - funny looking little tube amps

Wow three times more expensive than a normal Indeed / Bravo, and the differences measured are the same as the indeed / bravo modded with decent caps

Inviato dal mio HTC Hero usando Tapatalk
post #1647 of 2613

 

Quote:
Originally Posted by weissglut View Post

Did anybody already test this one: http://www.ebay.de/itm/6N11-Amplifier-Pro-Hi-Fi-Class-A-Tube-Headphone-AMP-Earpiece-Audio-Red-Demon-NIB-/320775316425?pt=LH_DefaultDomain_2&hash=item4aafb2e3c9#ht_4870wt_1398

 

It's labeled XY Hi-Fi 1.0 but I cannot find any infos in the web. I like the fact that all inputs are on the back while headphone jacks and power switch are on the front.



The info I've found myself now: http://rockgrotto.proboards.com/index.cgi?action=display&board=m&thread=5297&page=5#94290

post #1648 of 2613

In the same boat as some of you people. Looking at one of these cheap amps as a first amp but on the fence about quality as I have been reading of several of them passing away rather quickly. How have they faired for you folks?

post #1649 of 2613

love this headphone amp and i just  mode my bravo audio and iam more like it

post #1650 of 2613

my bravo pic mode

headphone amp 7.jpg

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