Hello,
I have for sale the pcbs for an improved version of the Mofo and the pcbs for the power supply for it.
This one has better bias control, better high frequency performance, doesn’t need a low output impedance preamp to drive it so you can easily use valve preamps too.
There is another interesting part, the power supply which generates a negative rail through an isolated dcdc converter which gives the posibility to use SITS without worrying about the inductor’s resistance when biasing the transistor.
Both the positive rail and negative rails are filtered giving very low noise.
2x amp pcbs + 2x ps pcbs sold
I have for sale the pcbs for an improved version of the Mofo and the pcbs for the power supply for it.
This one has better bias control, better high frequency performance, doesn’t need a low output impedance preamp to drive it so you can easily use valve preamps too.
There is another interesting part, the power supply which generates a negative rail through an isolated dcdc converter which gives the posibility to use SITS without worrying about the inductor’s resistance when biasing the transistor.
Both the positive rail and negative rails are filtered giving very low noise.
2x amp pcbs + 2x ps pcbs sold
Attachments
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IMG_6476.jpeg -
IMG_6482.jpeg -
IMG_6483.jpeg -
IMG_6490.jpeg -
IMG_6487.jpeg -
super mofo.jpg -
filter.jpg -
warbler 30v 4a 25w 8r.jpg -
warbler 30v 4a 35w 4r.jpg -
warbler 30v 4a 1w 4r.jpg -
warbler 30v 4a 10w 4r.jpg -
warbler 30v 4a 31w 4r.jpg -
warbler 31v 3.2a 33w 8r.jpg -
warbler 31v 3.6a 33w 8r.jpg -
warbler 31v 3.8a 33w 8r.jpg
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Thanks.
No, the amp is ZM’s Warbler. The power supply is Mark’s design, the AmyAlice to which I added a cap multiplier and it became A2Cmx. To the A2Cmx I added an isolated dcdc converter to be able to get a negative voltage from the positive rail and it became A2Cmx-V(which I shown in this sale thread)
I published something in the Warbler thread for the amp.
For the A2Cmx(without the new added part) I created a dedicated thread when I developed that pcb.
No, the amp is ZM’s Warbler. The power supply is Mark’s design, the AmyAlice to which I added a cap multiplier and it became A2Cmx. To the A2Cmx I added an isolated dcdc converter to be able to get a negative voltage from the positive rail and it became A2Cmx-V(which I shown in this sale thread)
I published something in the Warbler thread for the amp.
For the A2Cmx(without the new added part) I created a dedicated thread when I developed that pcb.
I have added a thd measurement at 25W/8r to show what the amp can do if you have the appropriate cooling.
Today I managed to get a bit more voltage out of my preamp and got to 33W on the output of the amp into 8r. I did 3 measurements where you can see that at 3.8A the higher order harmonics raise more than at 3.6A which indicates that 3.5-3.6A would be a maximum for the choke. Added the attachments to the first post.
Very cool. You’ve done an amazing job with this. 4R load looks good with distortion products all the way up, nice stair step from H2 onwards.
I guess you better send me a set. Battery powered Tokin amp!
I guess you better send me a set. Battery powered Tokin amp!
I just got this linestage and I love it. First line stage I’ve ever had that is truly “wire with gain” yet natural sounding. Swings huge p-p vac.
https://www.schiit.com/products/kara
https://www.schiit.com/products/kara
Thanks Greg.
Looks nice and cheap too for the offered performance. It opens a lot of roads if I can say so.
Looks nice and cheap too for the offered performance. It opens a lot of roads if I can say so.
Lucian, the Kara preamp is a game changer for sure with the p-p swing and how transparent it is.
Need some cash for a pair of speakers so lowered again the price.
If interested and considering price is still high make me an offer.
If interested and considering price is still high make me an offer.
