MX-2000 / Yamaha mosfet amp - are there any others
- Thread starter rottalpha
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- mosfet amp yamaha mx-2000
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interesting! I know you love your A-S3000.
Surprising none of the other old-school Yamaha amps had mosfets.
I am waiting for the A-S2100 to become "vintage"
The MX-10000 uses four pairs of Toshiba MOSFETS (2SJ123 / 2SK442) per channel to drive the HCA circuit http://www.yamaha10000.com/mx10000.htm.
"Eight high-power MOS FETs (four pairs of Toshiba 2SJ123 and 2SK442) are used in each channel in a quadruple push-pull arrangement in the output power stage to provide the HC circuit with low-load Class A operation. Developed exclusively for the MX-10000, these MOS FETs permit large-current high-speed operation. " Sweet.. MOSFET= "SuperDuty"
yes, the 10K has mosfets in the HCA, albeit, the output stage is actually a massive array of some of the best BJTs ever made. So the 10K is a hybrid, not really a mosfet amp.
...and yes, the 10K still at the very top of my bucket list
edit:
"To supply a large power output promptly to the output stage, the power buffer amplifiers use high ft power transistors with superb audio characteristics in a sextuple push-pull configuration, six for N CH and six for P CH, i.e. 12 in each channel (Sanken's 2SA1216 and 2SC2922)."
drool:
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This pic of my MX-10000 shows the Sanken outputs and MOSFET drivers of one channel:yes, the 10K has mosfets in the HCA, albeit, the output stage is actually a massive array of some of the best BJTs ever made. So the 10K is a hybrid, not really a mosfet amp.
...and yes, the 10K still at the very top of my bucket list
edit:
"To supply a large power output promptly to the output stage, the power buffer amplifiers use high ft power transistors with superb audio characteristics in a sextuple push-pull configuration, six for N CH and six for P CH, i.e. 12 in each channel (Sanken's 2SA1216 and 2SC2922)."
drool:
s.
Magnificently beautiful! It must be an absolute pleasure to listen to.
Stop sending disturbing images Mark, OMG, Is like I just saw Pam Anderson in the nude...the first time
Now I won't be able to think of anything else for acouple of days...and my mind is already wondering into the dark side...
https://page.auctions.yahoo.co.jp/jp/auction/e324849046
https://page.auctions.yahoo.co.jp/jp/auction/w281838541
VinylAddict8
Active Member
Have you had a chance to listen to the MX-2000 personally? I wonder how it stacks up sonically to the B-2x and B-2... have seen a lot of different opinions and they tend to be all over the map!
No don't have the MX and because it is the only Yamaha separate mosfet, it would fit really nicely in my collection. The fact that it supposed to sound Yamaha awesome, is a plus.
I looked at the schematic a little more and if I am not mistaking, the mosfets are part of the HCA only. The driver stage is still BJTs.
What a beast, drool
OMGCat!
Super Member
The new M-5000 has mosfet outputs. I’m not even sure they sell them in the states.
https://au.yamaha.com/en/products/audio_visual/hifi/m-5000/index.html
https://au.yamaha.com/en/products/audio_visual/hifi/m-5000/index.html
808_state
Super Member
Not impressed with the NS-5000 speakers but the C & M separates seem promising. Only $40,000 for the complete C, M, GT & NS set (makes the centennial set seem like an economical choice).
give me the MX-10000 any day over the new stuff
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808_state
Super Member
Hope you get a chance to pick one up! Would love to hear your impressions vs. the V-Fet beasts in your stable.
I have to admit that the new series design is Yamaha gorgeous and I have no doubt it sounds as good as some of the best amplifiers made today. Furthermore, I see that the new series relies on substance and is tastefully designed, not relaying on some weird, "look-at-me", 1in thick plate, aluminum sculpture. In classical Yamaha fashion, it attracts the eye, just as it attracts the ear (assuming it sounds as good as its elder siblings) through good taste design and quality of execution.
Reading briefly about the the new series, I see that the new M-5000 brings nothing new or revolutionary to the table, particularly comparing to earlier TOTL statement pieces from Yamaha, which makes me suspect that a M-10000 of sorts might be in the works at some point.
Reading briefly about the the new series, I see that the new M-5000 brings nothing new or revolutionary to the table, particularly comparing to earlier TOTL statement pieces from Yamaha, which makes me suspect that a M-10000 of sorts might be in the works at some point.
