Two questions, gents
1. Would mofo work as a headphone amp with just a pot at the input? Provided the source had enough gain. I feel like i should add a b1 type buffer after the pot to drive the mosfet better?
2. How does mofo compare to ACA soundwise? I was actually underwelmed by aca, having been spoiled by f5 and vssa
1. Would mofo work as a headphone amp with just a pot at the input? Provided the source had enough gain. I feel like i should add a b1 type buffer after the pot to drive the mosfet better?
2. How does mofo compare to ACA soundwise? I was actually underwelmed by aca, having been spoiled by f5 and vssa
MoFo will blow your brain , literally 
most probably even without any gain stage in fornt
buffer in between pot and MoFo is welcome
most probably even without any gain stage in fornt
buffer in between pot and MoFo is welcome
I currently use MoFo as a headphone amp. Sounds great and has enough grunt to drive even low sensitivity planars to any level of loudness you want provided your preamp has the muscle. I think I like the MoFo sound better than my ACA.
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I think the wife would prefer one of these...
the one thing I've learned from hanging in the Pass forum is...always have a big a** chassis ready, and a single/dual power supply at the ready is advisable
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Mike,
Finally got to hear the MoFo with a proper preamp.
Surpassed all my expectations. Really great.
Looking forward to seeing what else you have up your sleeve. 😀
Thanks
Vince
Finally got to hear the MoFo with a proper preamp.
Surpassed all my expectations. Really great.
Looking forward to seeing what else you have up your sleeve. 😀
Thanks
Vince
Ba3 with normal gain, but added switches to reduce gain for other amps.
Going to give a quick listen before going to work. 🙂
Going to give a quick listen before going to work. 🙂
Hey, this happen to any of you before? Involves the "break-in period", so here's your chance to close this thread. 😀
This question is more about sound impressions of the MoFo, than about how to build it.
I'm not a great believer in break-in any longer. A few hours for electronics and a week or so for speakers when they are out-of-the-box new. That's it.
I think, the rest is the brain and ears adjusting. So, to me first impression are important, but not the final word exactly.
I had two new pieces inserted into my system: One was the 24v MoFo and the other BA3-Pre. They sounded excellent right out of the gate. Worst thing I could say is they sounded "chesty", congested in the mids. But, I was floored. Then, a day later things got a little ugly. Everything was 2D, flat, no dynamics and small sound stage. Did I make a mistake? Why did I spend 3 plus months and counting building the mono-blocks? Where did I go wrong?
I started thinking, well, maybe I made a mistake using a SMPS. Maybe the bias moved on both units. Maybe the caps I chose are not optimal for some reason. However, on the 3rd day- BLAMO! This system started to sing.
Incredible detail, bass that goes on for days (The MoFo is around ~20w? No way!).
Last improvement was the stereo image going beyond the speaker boxes. It's like the musical information was breaking free of the drivers and slowly floating around speaker and not come directly from the speakers like early on.
Then it occurred to me that I heard this sound before. Dare I say it? (Gulp!)
It sounds like the M2! It's that same command of the speaker cones and tonal saturation. The kind of sound that make you want to listen for hours and hours, and maybe even want to call out of work! 😉
Sorry for the drama, but I get emotional over this stuff sometimes. I'll regret writing this later, but for now, it's true. At least, it's the way I see it.
Give the MoFo a chance if you are on the fence. It deserves it.
The break-in part. Weird right?
Thanks for listening, 🙂
Vince
This question is more about sound impressions of the MoFo, than about how to build it.
I'm not a great believer in break-in any longer. A few hours for electronics and a week or so for speakers when they are out-of-the-box new. That's it.
I think, the rest is the brain and ears adjusting. So, to me first impression are important, but not the final word exactly.
I had two new pieces inserted into my system: One was the 24v MoFo and the other BA3-Pre. They sounded excellent right out of the gate. Worst thing I could say is they sounded "chesty", congested in the mids. But, I was floored. Then, a day later things got a little ugly. Everything was 2D, flat, no dynamics and small sound stage. Did I make a mistake? Why did I spend 3 plus months and counting building the mono-blocks? Where did I go wrong?
I started thinking, well, maybe I made a mistake using a SMPS. Maybe the bias moved on both units. Maybe the caps I chose are not optimal for some reason. However, on the 3rd day- BLAMO! This system started to sing.
Incredible detail, bass that goes on for days (The MoFo is around ~20w? No way!).
Last improvement was the stereo image going beyond the speaker boxes. It's like the musical information was breaking free of the drivers and slowly floating around speaker and not come directly from the speakers like early on.
Then it occurred to me that I heard this sound before. Dare I say it? (Gulp!)
It sounds like the M2! It's that same command of the speaker cones and tonal saturation. The kind of sound that make you want to listen for hours and hours, and maybe even want to call out of work! 😉
Sorry for the drama, but I get emotional over this stuff sometimes. I'll regret writing this later, but for now, it's true. At least, it's the way I see it.
Give the MoFo a chance if you are on the fence. It deserves it.
The break-in part. Weird right?
Thanks for listening, 🙂
Vince
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nothing unusual here, just a typicall Electrolyte power suplly and output cap break'in strory 😀
From really good to really bad to really great?
That's some journey. 😀
Well, at least I didn't have to wait 400 hour, like some cap manufacturer's say to wait.
That's some journey. 😀
Well, at least I didn't have to wait 400 hour, like some cap manufacturer's say to wait.
