set of 2 match balanced siemens germany e88cc audiophile tubes (6922/cca)rare anniversary editions! authentic a-phi munich series w/ telefunken honorary logospro warm vintage hifidelity grail ranked musicality w/ lush bass resolve top shelf harmonicslegendary 64 tone! w/ real vintage labels and visible codesmatched pristine mutual gm 108/118%~114/114% (+100%=nos)audio grade phono ready w/ proprietary cali refurbish processships worldwide well packed! w/ siemens tube boxes ~authentic vintage audio collectibles by cali acoustics~ (nos tubes require up to 100+ hours to truly settle in, otherwise you are likely buying used)(be aware of relabelers/reprinters especially rare cca! ) current inventory includes:6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc12ax7 12au7 12at7 12ad7 (new) / ecc83 ecc82 ecc81 6201 (new)6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85 ~ 6ca7 el34 verified apps include:preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk mono blocks + many more!

2 grail grey mica siemens e188cc audio tubes, the old best versions to hear/collect period!famed for lowest distortion / low end boost over e88cc/6922 design / wettest of all siemens tones126/128 ~ 114/108 % mutual gm (100+nos/65+good) ~see our other listings for alternate listening positions! bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram live / caliacoustics.com (soon!)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

reference grade grail e88cc siemens audio tube, hifidelity warm pro tone! rare special editionmusical detailed imaging famed bass stage natural response depth, audio grade circuit readysought after collectible type! superb resolve great for jazz classical vocals stereos mics +morebalance matched 101/106 % mutual gm (100+nos/65+good) ~see our other amperex listings for alternate listening positions! bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram (live) / caliacoustics.com (soon!)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudio bhk +more apps~

This listing is for the silver Mhdt dac only with upgraded tube. Beautiful midrange on this one. If you have any issues with digital harshness, sibilance, excessive brightness this dac will solve it. Very fluid and “analog” sounding. Not as sharp as most current dacs. Didn’t quite work for me but I could see it being perfect for some people/ systems.