In my experience there are actually 3 "generations" of the M50. M50 (approx. 2007 to approx. 2010): Bassy and V-shaped. Very good. M50 (approx. 2010 and forwards): Less bassy and V-shaped. Also very good M50X: Even less bass and very different sound signature. I don't like it. IMO: try to to...

BTW, The Niimbus US4 has +/- 30 V like the older Violectrics. Quote from the manual: "Two toroidal transformers each with 25 Watt are providing the internal operating voltages of +/-30 V."

OK, the manual confirms it has + / - 25 V internal operating voltage, so less than original series Violectrics that have + / - 30 V.

Side-note: After checking the manuals of different Violectric manuals, it seems that my HPA V90-model (discontinued) gives the most voltage to 600 ohm cans (unbalanced)in the Violectric series: 600 ohm load: V90: dBU 28,6 / V 20,9 / 730 mW V200: dBU 27,6 / V18,5 / 570 mW DHA V590 lists 21...

On CMAs official site for this amp ( https://www.cma.audio/en/detail/index/sArticle/2057 ) it says: "High Output Voltage - through 50 V internal operating voltage." Does this mean +/- 50 V or +/- 25 V ? The previous Violectric series has +/- 30 V (60 V).

Thanks! Anyone else?

Can you name some powerful all-tube amps that can rival Violectric-amps in output/voltage swing? Also: what is the most powerful all-tube amp for headphones available, if price isn't an issue?

After reading about the silent revision of the M50 I bought a New Old Stock original ATH-M50 in the blue/white box with flip-cover, and I can confirm that there are 3 different versions of M50/M50x: v1: 2007-2011/12 (?): blue/white box with flip-cover: Significantly more bass than v2, otherwise...

Has anyone tried this amp? Couldn't find any reviews/info when I searched. (The company's website is in german only, so use Chrome's Translate function) http://www.xn--ptter-jua.de/Produkte/MAX44/max44.html

I love my M50s, but need something smaller with better sound isolation. Can you recommend som IEMs similar to them in sound signature. Budget: 200 USD. Minimal sound leakage is a must!   PS: I did search, but all suitable recommendations are over 5 years old.

I love my M50s, but need something smaller with better sound isolation. Can you recommend som IEMs in the price range 50-250 USD with punch(!), heavy bass and polite treble similar to the M50 sound signature?   PS: minimal sound leakage is a must!

Couldn't find a thread about these. Seems like a gimmick to me, but maybe useful for some people, if they sound good.   https://www.kickstarter.com/projects/inspero/vinci-first-smart-3d-headphones-that-understand-yo

What is the internal voltage swing of the 339 at the power stage? (an example: My Violectric amp has +/- 30 V)  

Can you recommend some warm-sounding, cheap studio monitor speakers? Not too large, $200-$400 per speaker?   To be used for music listening, not mixing/mastering.   I prefer a somewhat V-shaped sound signature

Hi   Can you guys recommend some good medium sized speakers with on/off/volume-knob on the front? Currently I have a pair of Creative Inspire T10. I checked out the Audioengine A5+, but they're a bit big, and also it doesn't seem possible to turn them off using the front volume knob.  ...