Headphone Amplification

I'm always intrigued by a full line of products from one manufacturer that can pretty much handle all your audio needs. As much praise as I've read about the Opus 21, I'm surprised to have never even heard of the S30 Integrated Amplifier and the XS "Extra Sources"..., um, box thing, which has an MC and MM phono stage, additional inputs including USB, an FM/AM tuner (!!!!!!), and a headphone amplifier. Can't find much about these two components around the world wide internet. Anybody ever seen them, heard them, or read a review of them?

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.

Hi, I have one amp with those and there may be room for improvement: it uses some Elma electrolytic of 4700mF (and 16V rating if memory serves) on each channel life wire. They seem to block around 25V of DC (rough measure before the cap) so it does not seem a good idea to just bypass them (just joking ). I am looking for some advice, there is quite room for alternatives and even 'groups' of caps if someone gives me a good reason to get rid of those electrolytics... Thanks!

is this worthy of consideration as an all-in-one dac/head-amp option for low-impedance single-ended headphones? https://www.bursonaudio.com/products/conductor-v2-plus/

I was looking around and stumbled across this page, and read this: Which lead me here, and I eventually found the datasheet. Any idea about how it would compare to a 5687 etc?

I have tried every possibility to optimize the circuit, but finally STAX has chosen the worst one. I'm pretty sure that STAX has gone with SMDs, it all fine, most parts in working will not generate lots heat, also SMDs significantly reduces the distributed inductance caused by PCB board through holes. ...... there some analyze and questions: 1, 4 large sized 7W 47kΩ resistors work as plate loads for 6SN7s, but higher value must be better, for example, two series 33K as 006T, or at least 62K 7W will far better than 47K, because 47K means too much current flow through 6SN7s, in my simulation is 9.5-10ma (grid at -9V), it's fine for 12AU7 or 12BH7, but 6SN7GT....…

I have a two speaker system and I'd like to incorporate a STAX setup into it. I'd like to continue to use my preamps remote control, and I want to use my preamps XLR output vs. my Rec Out's because well, I'm just funny like that. Is there a preferred way to adjusting the two volume controls when using a preamp and STAX amplifier? I know the 717 & 727 have a volume bypass switch, but I'm trying to open up my options to what amp I eventually get. Thanks

I'm going to be shipping a PINT amp to Romanee, as I wanted to give him the opportunity to hear it. If anyone else in the NYC area, who knows Romanee (i know a few of you do!) and haven't heard the PINT, let him know that I sent you, and hopefully, he'll be able to accomodate. Of course, if you don't want to hear it, then poo on you

Just picked up a DIY Kludge headphone amp. The base circuit came from a Vacuum Tube Valley #11 on page 24 and 25. Here is the link: https://web.archive.org/web/20131122141643if_/http://www.jumpjet.info/Pioneering-Wireless/eMagazines/VTV/VTV11.pdf A few minor mods were made to improve the performance, such as additional power supply filtering, HEXFREDS, DCed all filaments, etc. This amp sounds great. Has NOS Tung-Sol 6080 and 6SL7 tubes. Has plenty of power. Easily drives Abyss 1266 phi.

I have been reading a lot of post, reviews and opinions, they have been informative, helpful, confusing and sometimes funny. Yesterday I was reading a post and I saw a picture of a cat showing his balls!! Anyway, I have done some research on amps, headphones and cd players. I came up with a system based on reviews and opinions only. I will probably not get a chance to hear first then buy. So for now I have to go by, like I said reviews, opinions and recommendations. So this is what I came up with: I could go cheaper or more expensive, this just seems to be solid, but I am at best, a amatuer. Einar Sound VC-01i Amp Audez'e LCD-2 Headphone Bryston-BCD-1 CD Player T…

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So I got one of them non-pro Stax adapters off of eBay, but I have pro headphones (with the higher charging voltage, or whatever it's called). Anyone know of a way to change the voltage, besides selling it off and buying the right one? I'm thinking it's just a transformer tap, but I'm also thinking that the tranny that's already in there probably won't deal, so I'm thinking I'm going to have to get a new transformer...which is alright, as I suspect I'm going to want to (a) ground the thing (it currently only has a two-prong power cord); and ( replace the speaker wires with something better. So what I'm saying is, I'm already going to be inside the thing mucking around. So…

I have a stand alone Koss E90 box and a Stax SRD-7 transformer box. I am just curious which one every one prefers and why? iFi has their eESL trans former box, which is as about as universal as one can get, and there is of course used Stax transformer boxes. There is also a plethora of electrostatic amps, stax, Woo, Mjolner and so on. Just curious as to what every one likes for their Stax or other electrostatic headphones.

If anyone's interested, there's a good deal on Gilmore Lite over at Audiogon. I'm not associated with the seller, and would've bought it myself if I needed another amp. http://cls.audiogon.com/cgi-bin/cls.pl?ampstran&1197940150

Damn you LAiV. Just after I’m satisfied with your Harmony µDDC and µDAC you release a new, cheap combo DAC-headphone amp. Yo Rob!

Well, I have decided to get the Woo Audio 6. This should have no problem driving my 701's, is built like a tank, and from what I have heard has a nice mellow sound.

I tried to adjust tvr-1 and tvr-2 in srm-727, it seems tvr-1 is in 2-stage and tvr-2 is in first stage. I tried with traditional method which I was using in T1, measure R+/R- dc voltage and adjust tvr-2, measure R+ and ground then adjust tvr-1, both set to about 0 but found the amp stopped working. Then I restored to original value, the amp works again. Does any know the correct way to adjust tvr-1 and tvr-2 in SRM-727? Thanks. I also found 727 is a good paring with hifiman jade 2.

I am looking at some new output tubes to try in my latest idea. The 1626 looks good. A low mu and lower power output tube so if the amp is transformer coupled I will get a good half to three quarter of a watt. Not to much .... not to little and only $5 a piece. I have a lot of 6S4A's and 6P14P-EV's but I want a cool looking coke bottle shaped tube. I have some coke bottle shaped pentodes like the 6Y6G .... and they have the advantage that they have the same pinout as a bunch of other pentodes. But the 1626 is a true triode like the 6S4A and will likely sound better; although you never know. But do I need to break the mold and start using a true pentode .... or atleast …

Hi Everyone, Just got promoted and my Birthday is coming up soon, So I’d like to treat myself with a new Amp. I've just bought a Sennheiser HD 800s Headphones and I'm looking for an Amp to pair it with. Please note the following before answering my question. 1- I have a Marantz Cinema 30 AV Receiver supposedly a top-of-the-line unit that has a built-in DAC. 2- I will mainly use the Headphones for 80% Watching Movies, Football, Sports & 20% for Music " Heavy Metal, Rock and Movies Soundtracks". My Question, 1- Which Amp do you recommend to connect to my Marantz Cinema 30 and my Sennheiser HD 800s Headphones? 2- Is the DAC in the Marantz sufficient or …

This is a long time coming, but with the corona virus, I've finally got time to do this. This is my review of the KGSSHV Carbon I had commissioned from @joehpj (thanks!). I've purchased a pair of Stax L300 Limited to replace the Stax Lambda Pros I had been using for some 25 years before Hurricane Harvey flooded my house and destroyed my old headphones. I've upgraded the pads on the L300 with L700 pads--these make a noticeable difference for me, as the thicker pads allow me to get a decent seal even when I wear headphones. I've been driving them with a Stax SRM-252s, and it has become apparent to me that the amp was the weak link in the chain. After seeing photos …

Copying KG and Birgir's posts from the Stax Huddler thread

OMG this has got to be amazing right... it has a tube and it's a Cavalli and it's a Massdrop. What more could anyone ask for https://head-fi.org/threads/massdrop-x-alex-cavalli-tube-hybrid-amp-cth-dropping-monday.857673/#post-13654584 edited: ah man i was so excited till i saw this... ''Please be aware that this is not made by Cavalli. It's made by Massdrop by a China manufacturer with the Cavalli name being licensed, etc.''

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.

What are the differences between the Musical Fidelity X-Can V3 headphone amp with the X-PSU external power supply and the V8 version?

Hi, This is my first post on the forum. I have a STax SRM-323MK2 driver unit and a pair of SR-303 headphones. I would like to do some checks on the voltage levels (AC and DC if possible). Is there any service information or a schematic diagram available for the SRM-323MK2? Thanks.