Headphone Amplification

A week or two ago I snagged a used GS-1 from HF (from doobooloo). It arrived and I let it adjust to room temp before firing up, and all seemed well until the left channel cut out almost completely. Flipping the high/low gain switch seemed to almost fix it. I contacted doobooloo and he said that it was a common problem with some GS-1's with the DACT stepped attenuator, and that popping the lid and reseating the molex-like connector for the left channel at the DACT SA would fix it. It did... for about 10 days. I noticed it again today, and so I popped the lid and reseated again. The molex connector grips firmly and none of the pins seem to have any play. So... is the…

I have the standard old school Stax SR X Mk3 , SRD 7 set up. What would be another amp to upgrade to? Thanks.

Hello everyone, I'm new to the forums and was hoping that you guys could help me out. About four years ago, I went out and bought a pair of Sony MDR-V600 'phones for $100. Although far from audiophile quality, they gave me a taste of what I'd been missing out on. Well, I'm now 18 and have a steady flow of pure spending money coming from work, and I'd like to step it up a notch (or several notches at that) and get the 'phones of my dreams. I've got my sights set on the Sennheiser 600's (possibly 650's if I can find 'em cheap enough), but now I am at a loss of what sort of amplifier I should purchase along with the 'phones. I will be using a CD player a lot with them, so…

Hi, I'm new. I'm looking into incrementally putting together an affordable setup and was hoping to get some advice from you guys on what I should get and in what order. Background: I listen to mostly indie rock and jazz off of a macbook (external hard drive). I just recently got a pair of sr225s and i'd like to put them to a little better use. My next purchase will be in the $300-$400 range and then it'll be about month or so between purchases, so I'd like to buy things in an order that will make the most difference. I know it's not a lot of money (and i don't have the greatest cans in the world) but you gotta start somewhere. Thanks in advance for the help...

Found this on alibaba recently and it looks kinda interesting. They seem to have a fair number of internal pics and even an instruction manual (top right of the page) online so I figured I would post it here. I think this is the first energizer I have seen that requires manual bias adjustment when tube rolling/as matenance which is kinda interesting.

I'm thinking about upgrading my headphone amp, and since I'm using my Nuforce Icon for headphones right now I might as well upgrade my speaker amp at the same time. I've heard good things about the 840A, but not much about its headphone amp. Anyone have any experience?

I saw this pic and I thought this could be something new and interesting to try out. But then I saw these posts from the Tube Asylums and this unit sounds like a build quality/ customer service nightmare! http://db.audioasylum.com/cgi/m.mpl?forum=tubes&n=190381&highlight=frihed89&r=&session= http://db.audioasylum.com/cgi/m.mpl?forum=tubediy&n=116589&highlight=frihed89&r=&session= http://db.audioasylum.com/cgi/m.mpl?forum=tubes&n=190718&highlight=frihed89&r=&session= http://www.audioasylum.com/forums/tubediy/messages/116891.html I know Phil sent his McAlister amp back for some changes. I hope he is having…

My amp only has one set of inputs, and I'm getting really tired of pulling RCA's everytime I want to go from TT to CDP. Is there some kind of switch box I can buy I can put between my amp and my sources that will add convenience without sacrificing sound quality? It doesn't have to be pretty, just functional.

Since i finally registered, i thought i might as well enquire, can't hurt; Very recently finished building my SRX Plus, tip top on all mats minus the pot which is a TKD CP2500, gets a bit too steep from there What that sounds like, most of you already know, so will skip this part. Am currently pairing it with a DIY DAC that's based on an old dual PCM-63(P) Elektor magazine diagram that i've beefed up considerably. DAC as is now has great punch, bit of pompous a character if i might put it thus and is rather partial towards its lows/mid-lows; what you want as a source when pairing with an electrostatic amp and aiming for a balanced system. Dances circles ar…

Hello It occurs to me that the Cary 300sei is selling mostly under 2K on A'gon. which gives me the impression that maybe i can start thinking about trading in my ZD.... anyone have any idea about how these compare?

All I remember was seeing a MOT thread in Head-Fi several months back. It looks like it's been released, but I can't seem to find anything about it. So I take it no one has heard this anything anywhere?

What is the story on the "cryovalve" process? Quote from Tube Depot CryoValve Story:

I want to connect the output on my soundcard to one of the AMP800's inputs, but I don't know the best way to do this. The output on my soundcard is 3.5mm stereo, the Behringer AMP800 has two 6.3mm inputs for the left and right channels. I've been getting conflicting information, one of my friends suggests this--- 1/8 in. Stereo to Dual 1/4 in. Mono Cable http://www.zzounds.com/item--HOSCMP15 . My other friend says this cable would not work, as it would give two mono signals, not a left channel and a right channel. Thanks for any help on this.

http://www.head-fi.org/forums/4233707-post19.html I've seen this for nth time, how true is this statement?

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Hi! i would like to share my work with you. I made an dynalo amp powered by grlv power supply and a pcm1794a/cm6631a dac. Everything is totaly made by me. I also designed the pcb nd ordered it from JLCPCB. Amp offset voltage stays at max +-1mV and it is totally silent. Case is DOUK AUDIO. pictures: https://drive.google.com/drive/folders/1a6cbGFpN6s5EadR8DA_lb21ZFwOwzK4R?usp=sharing

So I bought the Mini3 that jinp6301 sold and the battery life's been pretty bad. I get about 3 hours per charge, so I figure it's time to replace the 9v that came with it. Any recommendations as to which 9v I should use?

Dear fellows, Maybe you can help me with an advice. A friend of mine gave me a Koss head amp E/9B but without the suited headphone. I want to know whether it is possible to play a Stax headphone (normal or Pro Version) through this head amp. If it does not work - it is possible to convert the Koss working with a Stax headphone, maybe by building an adapter? Many thanks in advance. I wish you a great happy new year 2018. Best, Andreas

My mother in law wants headphone amp recommendations to incorporate into her speaker rig, and, having never had the opportunity to A/B different head amps (one of these days I must travel to a meet...), I'd like to hear what advice head-casers suggest I give her. Present Gear CD transport: Esoteric P-10 DAC: Esoteric D-10 Headphones: currently HD555s, but likely to upgrade to HD600s or HD650s. I'd like to keep things solid state because I visit frequently with a toddler (plus one more on the way), and her stereo rack is within his reach. I'm not a fan of her speaker rig's sound, but I suspect that's likely due to speaker placement more than anything else (spe…

So I'd like to get a small desktop amp to power my SR-44 setup from my laptop and I was wondering what other options aside from a T-Amp might be out there? Budget (Sub $100 would be preferable) or something along the lines of the Starving Student Millet for speakers would be awesome if such a thing exists.

I misplaced my charger, and I don't remember what I can change and what I can't. The DAC/Amp says 12V DC and shows the polarity. That means 12V, right? I can't use a 15V charger on it? I can use higher amperage, but the voltage has to be correct, right? 'cause the charger I thought I had for it says 15V, but the connector is correct and the polarity is correct. But it could well be for something else, like an external hard drive.

So I go to case up my M^3 today, and I snap the volume pot's shaft. Yes I snapped a shaft. Dammit, so for the fuck of it I tried to epoxy that shit back into place. Game over for my RK27. Fuck. So I fire up my VanTOTL tonight, to discover my only 6AS7 has decided that about 10 hours of use was enough, and one of the triodes is dead. At least I have a backup 6080. *sigh* Amp maintenance isn't my idea of fun spending.

I am looking for an amp and would like to go with a portable(Zen Head, Mustang, ELO Mini3, etc) but would consider a desk-top for $2-300 if the sonic advantages were there. Do RCA inputs amount to better sonics or to the guts of the units decide that fact? And do desktop units have better parts, necesarily, than portables? The desktops units i'm considering are the new Trends, and any other that are priced $2-300. thanks

I'm doing a side gig reviewing headphones. Companies send me stuff and I give my opinion on things. I recently got a certain Moondrop Para planar which I thought sounded pretty okay. Then I saw the spec sheet and my hair stood up a bit- 101dB/V at 8 ohms. Or, when converted to actual efficiency figures... 80dB/mW. My question to the amp gurus here - will this load kill amps? It's a rare case of low efficiency combined with high sensitivity so people will be lulled into thinking that it's an easy load to drive. Like - hurr-durr, pot's only at 9'o clock and it's already hella loud! When in reality you're pushing serious mA and mW. And I'm not talking abo…

What do you guys think about these 2 amps coming out soon? Not much info on them. Basically, i'm wondering if anyone can give some insight about the quality of their products and whether these 2 new amps will be worth checking out.