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Bravo Audio - funny looking little tube amps - Page 113

post #1681 of 2599

@DefQon - thank You very much.

Some Grados should work well with little dot mkII? 

post #1682 of 2599

 

Quote:
Originally Posted by Nightelf View Post

@DefQon - thank You very much.

Some Grados should work well with little dot mkII? 

 

Yes it would, you can always tube roll with the LDMK2 if you find the treble slightly rolled off or so.

post #1683 of 2599

if anyone's wishing to offload one of these don't hesitate to drop me a pm ? (uk here)

post #1684 of 2599

I received today one of this amp's and im extremely regretful of having bought it. There's a very loud buzz noise and almost cant hear the music.

 

Can anyone help?

post #1685 of 2599

They're available on Amazon under the name "MUSE 6N11".

Less cost than I gave for mine.

Bob
 

post #1686 of 2599
Quote:
Originally Posted by apsol View Post

I received today one of this amp's and im extremely regretful of having bought it. There's a very loud buzz noise and almost cant hear the music.

 

Can anyone help?

 

Buzzing or low continous hum? If its a buzzing noise then it's a bridged solder connection on the pcb somewhere which is not supposed to, there is some interference going on somewhere and its a defect with the unit. If it's a low humming noise then it's power related suffering a ground loop. Either way contact the seller and describe the problems to him and ask him a for solution because the item you received is not as described, don't leave him feedback until the problem is solved.

post #1687 of 2599
Quote:
Originally Posted by DefQon View Post

 

Buzzing or low continous hum? If its a buzzing noise then it's a bridged solder connection on the pcb somewhere which is not supposed to, there is some interference going on somewhere and its a defect with the unit. If it's a low humming noise then it's power related suffering a ground loop. Either way contact the seller and describe the problems to him and ask him a for solution because the item you received is not as described, don't leave him feedback until the problem is solved.


Actually its a low continous humm i hear all the time, i said buzz because i saw it was the most used term to describe this problem.

 

And thats other thing i did wrong, i leaved positive feedback as soon as i received the amp, was really stupid of me but i wasnt expecting it not to work. I already contacted the seller, no response so far.

post #1688 of 2599
Quote:
Originally Posted by apsol View Post


Actually its a low continous humm i hear all the time, i said buzz because i saw it was the most used term to describe this problem.

 

And thats other thing i did wrong, i leaved positive feedback as soon as i received the amp, was really stupid of me but i wasnt expecting it not to work. I already contacted the seller, no response so far.

Read my post before if its a low hum your hearing, very annoying might I add but it doesn't matter if you have left positive feedback in this case as there is no way you can reverse the process. Give the seller 1-3 days to reply back, if not after inform the seller that you will be opening a case through Paypal.


Edited by DefQon - 6/14/12 at 5:04am
post #1689 of 2599
Quote:
Originally Posted by DefQon View Post

Read my post before if its a low hum your hearing, very annoying might I add but it doesn't matter if you have left positive feedback in this case as there is no way you can reverse the process. Give the seller 1-3 days to reply back, if not after inform the seller that you will opening a case through Paypal.

 

I think it is a ground loop but how i solve it?
Can i still open a case even if i paid being paypal guest? because at that time had not yet added the new credit card that I have now.

post #1690 of 2599
Quote:
Originally Posted by apsol View Post

 

I think it is a ground loop but how i solve it?
Can i still open a case even if i paid being paypal guest? because at that time had not yet added the new credit card that I have now.

 

A ground loop is not easy to solve, could of various reasons and you need to have a solder gun and voltmeter at hand and know which points to measure and know where the ground comes out of the circuitry. 

 

As long as you paid through Paypal, it should provide you a transaction ID since its through eBay. You use the transaction ID to open cases and disputes should things get hairy or disagreement settlement occurs between the seller and buyer.

post #1691 of 2599
Quote:
Originally Posted by DefQon View Post

 

A ground loop is not easy to solve, could of various reasons and you need to have a solder gun and voltmeter at hand and know which points to measure and know where the ground comes out of the circuitry. 

 

As long as you paid through Paypal, it should provide you a transaction ID since its through eBay. You use the transaction ID to open cases and disputes should things get hairy or disagreement settlement occurs between the seller and buyer.


dont know anything about electricity and stuff so its better to wait for a response from seller.

post #1692 of 2599
Quote:
Originally Posted by apsol View Post


dont know anything about electricity and stuff so its better to wait for a response from seller.

Exactly and its better to leave the unit be and wait for the seller to respond, otherwise if you go ahead feeling adventurous and tamper with the amp to try resolve the ground loop issue, the seller will most likely blame you making the problem arise and voids the warranty.

post #1693 of 2599
Quote:
Originally Posted by apsol View Post

 

I think it is a ground loop but how i solve it?
Can i still open a case even if i paid being paypal guest? because at that time had not yet added the new credit card that I have now.

 

How do you know it's not the tube or the AC converter?  My original tube buzzed and made all kinds of noise.  I replaced it immediately as well as the AC converter.

 

That said, once I got it working I put it in a plastic bag and into the "junk" drawer.

 

orig.jpg

post #1694 of 2599

I got my Bravo V2e last week and am loving it so far. I've read all 113 pages of this post while waiting for it, and bought two matched Mullard tubes that I got before the amp (the amp took 2 weeks to get to L.A.). It's only been a week; this is my first tube amp and the only comparisons I've made have been to the other amps I have, which are all solid state (Sansui AU series, CSG Cmoy, Emotiva USP-1, Crane Song Avocet DAC), but wanted to share some things that are "new" to this amp that have changed from comments posted a few months ago with regards to it that I think may help anyone who's been following this thread:

 

These amps can be purchased directly from Bravo Audio, no need to look for one in auction (although I bought mine through a eBay auction and paid $56 including shipping, they sell them on their website for $69.99 for those that don't want to wait):

 

http://bravoaudio.com/index.html

 

As far as shipping these amps, Bravo now ships them in a box with a foam insert that secures them perfectly, and it comes with the stock tube already installed:

 

IMAG0218.jpg

 

The power supply that comes with the units appears to be of a higher quality than what was previously reported. While reading half way through this post, I almost ordered a new 24v PSU thinking the one I would be getting was going to suck, but decided to wait for the amp and see what I got, and am glad I did. I've been moving the amp around while it's on, and there's been no issues. I've even jiggled the connector to see if it cuts off power and it doesn't. The new PSU's block has a green status LED and high-quality shielding on the cables (have seen much cheaper-feeling PSU's come with other electronics I've bought in the past). Here's what the new PSU's look like:

 

IMAG0217.jpg

 

One thing I've noticed that Bravo hasn't updated in their product pictures is the new power switch. These no longer have the cheap switch everyone was complaining about. This is the new toggle switch that comes with the amp now:

 

IMAG0216.jpg

 

Now, my impressions of the amp so far are that for the money, it's a good deal. The stock tube, which I listened to for the first couple of days didn't excite me. When I switched it out for one of my Mullards, I was honestly floored by the dimensionality of the sound. The most high-end amp I own is the SS amp that's built into my Crane Song Avocet, it drives all my headphones but it's super neutral. My Sennheiser 650's sound amazing on this amp with the Mullard tube, as does my Grado SR80i. The most transparent pair of headphones I own is the AKG 240DF, which sounds "surgical" over my Avocet. I tried it on this amp and I can hear the tube's distortion a bit too much, so that's not a good pairing.

 

Source so far has been my 2nd gen iPod touch connected to a DIY LOD cable I made, and I've got the amp connected to a Monster Pro 3500 conditioner. I can hear distortion from this amp while nothing is playing only past the "1 o'clock" position, and I've yet to listen to it this loud because even with the 650's, I don't go past "10 o'clock" on the attenuator. There are no noise issues whatsoever below the "12 o'clock" position, but I suspect that's due to it being connected to my power conditioner, as well as having all DIY cables on all my headphones so shielding is not an issue. If things change with regards to quality in the next few weeks, I will update this post. So far, I'm loving it. I was thinking of doing some of the mods but am currently thinking that I might just build one of these as I'm also learning how to build amps (I would like an XLR stereo out, or perhaps dual channel XLRs for outputs, as well as XLR inputs from some of my other gear, not sure at this point).


Edited by HiFi1972 - 6/23/12 at 10:12am
post #1695 of 2599

Ordered the bravo ocean, hopefully I can try different tubes in future. Got a lot to learn, completely new with tubes, this is my very first tube amp.


Edited by audionewbi - 7/1/12 at 7:38pm
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