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63 About this deal
Hi, Don Sachs here. First, this is not an attempt at advertising in any way. The amp whitestix refers to is now in the second prototype and there is no commercial product. Nice to know that you are off to such an impressive start. Given the type of music you are listening to I am not surprised. the amplifier is revealing more aliveness and naturalness. Certainly, makes for a more engaging listening experience. Tonight the Willsenton is really starting to open up. A new amplifier, new tubes and a new modulation cable, that's a lot and takes a little time. The 300B tube brings the artist in the room with you in a more haunting ethereal way than any solid state amp can muster. Along with this we usually hear a very wide soundstage that is three dimensional with a gentle treble that has just enough sparkle to make it all realistic.
Agree with every point that you made. However only so much can be accomplished for a given price target. I have no doubt that your 300b is superior in numerous ways, but no way could it sell for only1500.00 USD either. Just to share some experience with the 300B. I have the original Willsenton R-300B model from a couple years ago. That one has a balanced set of inputs. Very nice amp. From rumors online I believe Willsenton are made by the same factory as Cayin and Prima Luna. You can see the resemblance to Cayin in build with the newer version Willsenton R300 model.The amplifier circuit, if perfect, does nothing more than regulate the power supply. If the power supply has poor phase and impedance, it passed on to the next component. Sequential components alter the preceding and this is why a really great component may get so-so response in one reviewer's system and sterling accolades in another. My 300b SET uses the 6EM7 as the driver rather than the 6SN7 (For the reasons you mentioned). Also it utilizes an interstage transformer in place of coupling capacitors. Capacitors have two frequency dependent properties, ESR and ESL, often ignored by engineers and almost certainly by Joe Audiophool.
It's more complicated than just hanging a film cap across B+. If you assume the designer knew what he was doing, had good ears and related equipment, you could make things a whole lot worse by making willy-nilly changes. charles1dad I am glad that you see his point. I do not. He makes smug and arrogant assumptions about people he doesn’t even know.On the Muzishare X7 model I suspect the Muzishare silver label on the coupling caps is covering a Mundorf EVO silver cap. They refer to the cap as Germany in origin and has the same 1200VDC rating. I may have to try to peel the silver label off to see what is underneath. Maybe someone on here knows which caps Muzishare is rebranding? Are you fine with people being seen off by charlatans that give bogus reasons with ZERO supporting evidence other than their say so? They think their system sounds the same every day or that they can turn it off for some time, make a change and then determine a delta. Ha! Qualified engineers listen for weeks, making comparisons between a reference unit and the changed. Confirmation bias plays a huge part in an awful lot of opinions. Beautiful music emerged from the Devilles but at first I was concerned as the sound was much too warm. I was missing that treble energy. The bass and mids were big, full and expansive but the treble was rolled off. Hmmm. I realized I had my Cardas Clear Reflection and RCA Cables in. I removed those and replaced them with some (less expensive) Nordost Blue Heaven speaker cables and RCA cables. YAQIN MC-100B Class A Push Pull Integrated Tube Amplifier, Power Amplifier, Output Power 50Wx2 / 25Wx2, KT88 Tubes, AC115 or AC 230 Bottlehead is a good example for illustration. They are inexpensive and thus a low barrier of entry for budget buyers. Although low cost, they are consistently well designed and engineered. They are good candidates for upgrading to better quality parts due to their solid engineered foundation. They will definitely respond to higher quality capacitors/resistors/transformers/tubes etc.
My goal is to find an affordable 300B amp. If it is built like the R8, the Willsenton R300B has potential. Perhaps I am overlooking a better option than the R300B. Finally, the power cable is a FURUTECH FP-TCS31. The NEOTECH and the FURUTECH were assembled by me, nothing very complicated but we obtain an excellent listening level for much less expensive than their fully assembled equivalents.AC versus DC filament heating has been debated forever it seems. Some do argue that AC heating is more purist in approach (Require hum pots). However many/most of the highest regarded 300b amplifiers do choose to utilize DC heating (Do not require hum pots). As is typical for high end audio, there’s never 100% consensus on anything. I do have experience building tube guitar amps....initially from kits and then some scratch builds for Fender and Marshall schematics. So I can say from those builds I could even hear a difference in cheaper caps such as Orange Drops vs Mallory 150s in those builds. And a lot of musicians will pay top dollar for some vintage BumbleBee PIO caps for their Les Paul guitars claiming an improvement in guitar tone. So there has to be something there. It cannot be all imaginary.
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