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beautiful amp! care to show us pics of it in action
__________________ I asked Jesus, "How much do you love me?"
"This much", He answered. Then He opened up His arms and died.
-anonymous "As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality."
-Albert Einstein my headfi feedback
sweet, as mentioned earlier, I think you should add it to your amp line
good job!
__________________ I asked Jesus, "How much do you love me?"
"This much", He answered. Then He opened up His arms and died.
-anonymous "As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality."
-Albert Einstein my headfi feedback
Well, the leatest one, the first published here. Essentially an AD797 followed by a single-ended class A bjt output stage. Apart from the transformator, the whole construction is dual mono, the stabilization was done using LM337/317. The quiscent current of the output stage is about 100mA, enough for my 600 Ohm Beyer DT-880. Previously I tried the AD797 on its own and it had no problem driving this high impedance can. It had a very a transparent sound, but sometimes I thought, that it is a bit shy on the bass. Everything was OK, but I missed some drive from the lower registers. Well, this problem is solved, with the output stage and transparency remaind a same. The assembly took two days (friday - 4 hours, saturday - 10 hours (that was a bit too long though)). Anyway, some pictures.
tight fit but no problem since the mosfets are installed with isolating high performance kapton sets on the 1.5" heatsinks, the smaller film caps (0.1uF, 0.068uF, 0.01uF MKS/MKP types) are mounted "subterrestrial" to leave the place on the upperside for the big film caps (4.7uF, 3.3uF, 0.68uF)
at 80mA bias the 1.5" heatsinks are getting significant warmer than the 2.5" heatsinks in my "maxxed" M³, but I wouldn't call it hot though, still on the safe side
nothing special on the frontpanel, the same design like on my other amps. Since the M³ is THE amp for driving my K1000 I installed an additional dedicated 4pin XLR K1000 jack
Linear Mode
