Tube headphone amp in recording studio : two dumb questions

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vroum500

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I have an audioguide project - basically just my voice, interview excerpts, a few sound effects. Seems like I need an headphone amp since my headphones are "underpowered" by my audio interface.

I have two silly questions regarding headphone amps, but this is the place them, isn't it?

1- Many people recommend to use a tube headphone amp with the headphones I'd like to get for my audioguide recording projects. Would a tube headphone amp be fine, or should I stick to solid state to get an optimal sound?

2- Many headphone amps have RCA unbalanced inputs. How would I set the output volume on my audio interface: max? 80%?

Thanks for your help!
 
Are you sure you need a headphone amp? Is there maybe some setting you're missing on the interface. If the level of the recording isn't too low it should be fine.
 
depends on the headphones. From his description maybe he's using Audiophile stuff and some of that can be hard to drive.

vroum .... what kinda cans do you have and what kinda headphone amps are you considering?
In the audiophile world tubes are the holy grail but in recording world you want accuracy.
No reason a tubed amp can't be accurate but that usually costs more money than a SS unit.
 
Part 2!

Hello,

Sorry for the delay - My daughter is in her terrible-two phase and my pregnant wife should have given birth of our 2nd child this past Thursday. Now that I have a couple of minutes of free time...

First, thanks for your replies. I appreciate! In the meantime I continued my reflexion on the topic and I did some tests. So, here are the answers to the questions:

1. Tracking, error-finding (closed back)

For tracking, I use the HD280 Pro from Sennheiser - a 64-Ohm, closed-back set of headphones. It has 200 hours of burn-in. During a test with my Oktava MK-319 microphone, I had to crank the output of my UA-25EX audio interface to get a decent sound on my headphones.

Now, I just did a test with music on iTunes -> iMac -> USB -> UA-25EX Audio interface -> HD 280 Pro... and I got plenty of gain. At 5/10 (12 o?clock) the sound was loud enough, but the sound wasn't as full as I expected. I've read that this set of headphones could need more 500 hours of burn-in... Or maybe an more powerful, "detail" amp?

Part of the problem encountered during my voice recording test could be too-weak preamps on my interface. I plan to get a mic preamp that would provide more gain than the 40-ish dB gain of my interface. I looked at the double channel M-Audio DMP3 with a 67dB max gain, but now the Golden Age Project Pre-73, a single-channel with a 80dB max gain, seems more promising.

...But still, the headphone output sound of my interface doesn?t seem to be optimal. I just did a test with music on my HD 570 «*non-monitor*» headphones, and I had to crank up to 9/10, even to max (4:00, 5:00), to get a decent level of sound.

2. Mixing, mastering* (Semi-open or open back)

For the other steps after recording, I?m tempted by the DT-880 Pro, a 250-Ohm, semi-open back set of headphones. In various forums, users unanimously recommend the involvement of an amp. 600 Ohm headphones seem to be hard to get in Canada.

In the open-back category, the Beyer DT-990 and the AKG K 701 seem interesting.

3. Headphone amp - Tube

My first idea was to get a Presonus HP4 (150$US). It?s powerful and it has balanced inputs/thru, but it?s more on the entry-level side. Also, paying for 4 outputs when I would use only one could be a bad thing. So, I looked at the options available for a dedicated one-channel headphone amp.

For tube amps, a lot of Little Dot units are affordable and have great reviews:

MK1+ (139$US) http://www.littledot.net/forum/viewtopic.php?f=9&t=821
MKII (140$US) http://www.littledot.net/forum/viewtopic.php?f=9&t=816
MKIII (194$US) http://www.littledot.net/forum/viewtopic.php?f=9&t=815
MKIV (289$US) http://www.littledot.net/forum/viewtopic.php?f=9&t=820

4. Headphone amp - Solid state

For a solid state headphone amp, it would be one of these:

Little Dot MKV (279$US) http://www.littledot.net/forum/viewtopic.php?f=9&t=817
Corda Swing (295$US) http://www.meier-audio.homepage.t-online.de/swing.htm
Matrix M-Stage (270$US) http://cgi.ebay.com/Matrix-m-stage-Headphone-Amplifier-Amp-/350369229247?pt=LH_DefaultDomain_0

5. Thoughts

Since my first post, I thought about all of this, and here are some reflexions:

- I looked at all the threads thar refer to tube rolling or swapping, and honestly I don?t know if I would have time/money/patience to do all of this.
- First I thought I could get a tube amp to enjoy its sound when I'd listen to every-day music, but if I lose accuracy on my recording projects because of that, it wouldn't be a wise choise... I think I should stick to solid state.
- I considered DAC/Amp combos available thru eBay, but I've read about quality differences between the reviews of the 1st gen. of a product and recent units. I should stick to single-function, consistent-quality products (i.e recent comments from new happy users)
- I decided that my budget for each component is 300$ max before taxes and shipping. I guess I can get reasonable products for that price.

Sorry for the lengthy response, and thanks for reading!


* I know, mastering shouldn't be done on headphones. But I have no cash and room for monitors and a treated room. My projects are to make audioguides, not to make "Dark Side of the Mars Planet" :) My intention is to use the 112dB Redline Monitor plugin to emulate speaker placement.
 
Also check out Headroom headphone amps. They make some good stuff.

I, personally, do LOTS of stuff on 'phones. I get looked at like I'm weird for it around here but I don't care.
I think, and feel like I could prove it, that my headphone mixes sound about the same as my monitor mixes.
 
Thanks for your observations. I'll keep you informed on my quest for an headphone amp - after Christmas...
 
Personally I use the Grace m902B (being replaced by the m903 next month).

m903_main.jpg


Selectable inputs, digital and analogue (including USB) - outputs are headphones and line with separate control and easy to switch between headphones and monitors. Amazing quality.

No valves (vacuum tubes) as I want accuracy rather than warmth.
 
Also check out Headroom headphone amps. They make some good stuff.

Well, after reading many articles and comments, it seems the Headroom Micro Amp is the one I would get. My birthday is in February, and I'll include this amp on my wishlist.

Thanks!
 
that ought to be a nice amp.
I have a Headroom and I definitely like their crossfeed circuit
 
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