300b lovers

I have been an owner of Don Sachs gear since he began, and he modified all my HK Citation gear before he came out with his own creations.  I bought a Willsenton 300b integrated amp and was smitten with the sound of it, inexpensive as it is.  Don told me that he was designing a 300b amp with the legendary Lynn Olson and lo and behold, I got one of his early pair of pre-production mono-blocks recently, driving Spatial Audio M5 Triode Masters.  

Now with a week on the amp, I am eager to say that these 300b amps are simply sensational, creating a sound that brings the musicians right into my listening room with a palpable presence.  They create the most open vidid presentation to the music -- they are neither warm nor cool, just uncannily true to the source of the music.  They replace his excellent Kootai KT88 which I was dubious about being bettered by anything, but these amps are just outstanding.  Don is nearing production of a successor to his highly regard DS2 preamp, which also will have a  unique circuitry to mate with his 300b monos via XLR connections.  Don explained the sonic benefits of this design and it went over my head, but clearly these designs are well though out.. my ears confirm it. 

I have been an audiophile for nearly 50 years having had a boatload of electronics during that time, but I personally have never heard such a realistic presentation to my music as I am hearing with these 300b monos in my system.  300b tubes lend themselves to realistic music reproduction as my Willsenton 300b integrated amps informed me, but Don's 300b amps are in a entirely different realm.  Of course, 300b amps favor efficient speakers so carefully component matching is paramount.

Don is working out a business arrangement to have his electronics built by an American audio firm so they will soon be more widely available to the public.  Don will be attending the Seattle Audio Show in June in the Spatial Audio room where the speakers will be driven by his 300b monos and his preamp, with digital conversion with the outstanding Lampizator Pacific tube DAC.  I will be there to hear what I expect to be an outstanding sonic presentation.  

To allay any questions about the cost of Don's 300b mono, I do not have an answer. 




Good gosh, were I to get 11 years out of 300b tubes, I'd be extremely happy as would my pocketbook.  ;-)  I added some fans in my audio rack to ally some of the heat generated by the tubes.  As I say, I am willing to play to play for this degree of sonic splendor.   How Don got 27 wpc out of these monos is a mystery to me, but they sure drive my Spatials with alacrity and I am sure they'll do the same with my new Cube Audio speakers.  

I took a leap of faith and had a 300b built without ever hearing one.   It has none of the “cons” often associated with generic descriptions of the tube type. 

No mushy lows, rolled off highs.   It all has to do with the design and parts used..  I can’t count how many times I have been surprised at the information I was missing with other amps that pours out of this amp.    The detail and holographic image is spooky.   Using WE 300b. produced in Dec 2021. , hopefully I get the kind of life that  Charles Dad got out of his 300b 


I did the same when I bought the inexpensive Willsenton 300b integrated amp, having never heard a 300b amp, but was aware of their sonic attributes and it opened my ears to the joy of this tube type.  I have the Willsenton amp in my bedroom system, driving my Gallo Stradas and it is just a joy.  A properly built 300b amp like Don's, is in a different realm, but the inherent magic of these tubes is revealed even with the modest Willsenton amp.  I was a gateway amp that lead me to Don's creations. 

As I mentioned, I am going to attend the Seattle Audio show to hear Don and Clayton's latest gear and will be booking a room at the venue on Saturday night, June 24.  If anyone of you AGer's are interesting in attending solo, I'd be up for sharing the room and splitting the cost between us, about $100 each.   I did the same with a long-time internet audio pal at Axpona and we had a great time together, during and after the show, comparing our recollection of what heard at the show.  Let me know if you are interested.  


I didn’t know that you are getting Cube Audio speakers. Which model?

A good friend has had their Nenuphars for about 4 years and he absolutely loves them. He’s driven them with a Pass Labs  XA 30.8 as well as a T+A amplifier to very good effect.  However, his favorite choice and main amplifier is a custom built (Found Music) 2A3 SET mono blocks.

Cube Audio speakers will unequivocally sing with your 300b amplifier. Excellent move by you.