Any one tried the Yamamoto A06 with AD1 tube?

Wow, Chad (reticent) I had to look that one up... Not revealing one's thoughts or feelings. I babbled on for two paragraphs about your Yammi 06-3 question. Not sure how less reticent I can be. I like the EML labs tubes. I have only had the pleasure of using the AD 1 EML and the fact that they cost around $800.00 the pair I don't use them for everyday use. As for 45 tubes I prefer the RCA globe style. I can give my opinion and thats all it is opinion... I believe the old school tubes of certain makers are far superior to any new production tubes. If you can get your hands on new ones. Remember just cause a tube tests good doesn't necessarily mean it's good.. Lots of hash sounding tubes test good. This is why new tubes are not as rich and loving as old school NOS tubes... Materials of today's market are not of same quality. Characteristics of metal make up has decreased. Plates and internal components were coated with chemicals which are no longer sold or the EPA would have a fit over. Regards

Lol Madranker, I won't pontificate any longer :-)

If babbling is 2 paragraphs you need to go hang out with more old ladies! Thanks for sharing though. I suspect the A06 will be excellent.

I have not really noticed old tubes sounding better than modern ones, although I understand what you probably like in those vintage tubes. Obviously you need to find good quality modern tubes as of course there are modern crap tubes too.

In my experience vintage tubes tended to sound metallic, or flabby, or dark when compared to modern ones. probably down to the tarnished pins.

I spent many years trying to find decent tubes for Pre amps, power amps, mic Pre amps, mics, etc. In fact it turned me off tubes in the end. It was only when I tried the Yamamoto that I got dragged away from the dark side! The EML tubes are excellent & consistent.

Chad - I looked that one up too...you won't get me to see the New tube / NOS tube thingy. I'm stuck in my ways, so don't Rant. Not easy to make the Ol Madranker Laugh. Being somewhat serious now with this statement and meaning no disrespect.... I talk with guys like you and read threads and belong to clubs etc. Everyone always asks which OUTPUT tube sounds best but yet they never mention rolling the driver tubes or the rectifier tubes. Makes me wanna Burp. I can tell you, you can change the way your amp sounds easier and cheeper if you have 4 pairs of 6SL7's then find the set you like most and sell the other three. I can also tell you from experience different rectifiers have slight subtle changes.. And last but not least. After thinking about it I might be willing to sell my A-06-3 Yamamoto if your offer is good. Cheers

I own the A06-3 amp, using the EML AD1 tube. I also own the A08S amp and still do. Driving 106dB/W Lowther horns.

First of all, both amp sounds great. That's why I still keep both for use in rotation. In comparison, the A08S sounds more delicate, with finer brushstroke. The A06 sounds much more dynamic, with bigger scale, and revealed more details than the A08. Different taste.

Second, I found the A06 to be very sensitive to noise in the system, either RF or ground loop. I struggled with the noise issue for a while until I optimized the grounding of all connected components, after which the A06 becomes absolutely quite with zero noise even with my horn. The sound also improves significantly, becoming more refined.

Third, in my A06 only EML AD1 tube can be used. I have various vintage AD1s and all of them suffer from low-level hum. Perhaps due to my horn's high sensitivity. I believe the A06 is hum-optimized to the EML AD1 tube, which has different filament construction compared to vintage AD1s. This is the only shortcoming of this amp as I have collected those rare gems which I hope I can enjoy one day in a properly designed amp.

I cannot say if AD1 has that 45 magic as I'm not sure everyone agrees on what that is anyway. I do know both amp can sound wonderful with high-sensitivity speakers.

Thank you for posting this. With voltage stabilisers, one per AD1 tube, available from European importer, JacMusic, your amplifier might be adjustable for use with NOS and current production EML AD1 valves. When I placed my recent order for an A06-3, the importer noted that I had found the EML mesh plate 80 rectifier auditioned in an A08s sounded more open and alive than a NOS item. He offered to arrange manufacture of an EML mesh plate AZ4 rectifier for use rather than the NOS item amp is normally supplied with. I am looking forward to delivery (into 104db horns) after your description of the presentation character.