DIY Class AB SS Amplifiers Top List

[vvs07]

AB100 Class AB Power Amplifier by Nelson Pass

 

[tnvijay]

When was AKSA 55 marked as DIY audio amplifier? I always thought there's a clone of AKSA based nd many other designs inspired from AKSA.. Or is there a diy version of AKSA 55? Am I missing anything?

 

[invaderzim]

most DIYer's have analysis paralysis, this list is going to be a problem for them !

It would make the list a lot more complex but it would be cool if there were indicators as to difficulty level, if pcbs are available and if they use any hard to find parts. A way for people to eliminate options quickly to narrow their version of the list.

 

[Hiten]

Number of class AB amplifiers in the list. Is it broadly a different way to skin a cat ?
For the uninitiated like me can any one tell in brief the uniqueness/specialization of each amp taking couple of examples from the list.
Thanks and regards.

 

[meanman1964]

When was AKSA 55 marked as DIY audio amplifier? I always thought there's a clone of AKSA based nd many other designs inspired from AKSA.. Or is there a diy version of AKSA 55? Am I missing anything?

BabyAksa

 

[H713]

Where does the Self Blameless amplifier fit into this?

 

[dadod]

You are forgetting one of the best DIY amps here, 200W CFA and 100W CFA versions
200W MOSFET CFA amp

 

[sandrohv]

Where does the Self Blameless amplifier fit into this?

The Self Blameless Amplifier is not an amplifier design, it is a concept. Self implements the concept using a two stage amplifier (like the Honey Badger), but that does not mean every two stage amplifier is a blameless amp. Below is an excerpt from Self's book.

The Concept of the Blameless Amplifier
Here I introduce the concept of what I have chosen to call a Blameless audio power amplifier. This is an amplifier designed so that all the easily defeated distortion mechanisms have been rendered negligible. (Note that the word Blameless has been carefully chosen not to imply perfection, but
merely the avoidance of known errors.) Such an amplifier gives about 0.0005% THD at 1 kHz and approximately 0.003% at 10 kHz when driving 8 Ω . This is much less THD than a Class-B amplifier is normally expected to produce, but the performance is repeatable, predictable, and definitely does not require large global feedback factors.

 

[Onemangang]

Hi

Right you are Damir

There is also Shaan's PEECEEBEE V4H. I have'nt build it myself, but they have started the 5.th group buy. I guess that qualifies?

 

[mexmike]

Thank you for all your contributions.I think the list will expand further and very useful for diyers.

1. The diyAB "Honey Badger"
2. Leach Amp [v4.5, Superamp]
3. Slewmaster - CFA vs. VFA "Rumble"
4. AMB Lab β24 fully-differential power amplifier
5. Rod Elliot P3A
6. AKSA 55
7. Circlophone© by Elvee
8. MikeB's Symasym
9. David Tilbrook's AEM6000
10. Fetzilla
11. Apex FH9 Xrk mode
12. Roenders FC100
13. Cubie3
14. DX Blame
15. VSSA
16. VHex
17. Symef
18. Quasi's Nmos200
19. Very Simple Quasi Complimentary MOSFET Amp
20. Vzaichenko's Vertical CFA-Non Switching Output Stage
21. Vzaichenko's Tubesumo Amp
22. Vzaichenko's Other Projects !
23. Apex SR50 and SR200 ( I didn't listen these systems but maybe anybody can share their experience )
24. Astx - SA2014 BJT (200W@8R, 400W@4R) 8 pairs TTC5200 and TTA1943
25. Astx - SA2015 V-MOSFET (70W@8R, 140W@4R) 3 pairs IRFP240 and IRFP9240
26. Astx - SA2015 V-MOSFET (100W@8R, 200W@4R) 1 pair IXTH80N20L and IXTH48P20P
27. Astx - SA2016 L-MOSFET (70W@8R, 140W@4R) 3 pairs ECX10N20 and ECX10P20
28. Astx - SA2016 L-MOSFET (100W@8R, 200W@4R) 3 pairs ECW20N20 and ECW20P20
29. NAP-140
30. Ovation SX and NX
31. SC200 Silicon Chip Magazine http://www.siliconchip.com.au/Issue/2017/February/New+SC200+Audio+Amplifier+–+Part+2?res=nonflash

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SC200 Silicon Chip Magazine http://www.siliconchip.com.au/Issue/2017/February/New+SC200+Audio+Amplifier+–+Part+2?res=nonflash

 

[stanislav1957]

L. Zuev's amplifier from Russia.N. Sukhov's amplifier from the USSR/Ukraine.

 

[bogdan_borko]

I guess there are not many round here that heard two amps from the list and compared them directly, so it's kind a pointless?

 

[egra]

Thank you for all your contributions.I think the list will expand further and very useful for diyers.

1. The diyAB "Honey Badger"
2. Leach Amp [v4.5, Superamp]
3. Slewmaster - CFA vs. VFA "Rumble"
4. AMB Lab β24 fully-differential power amplifier
5. Rod Elliot P3A
6. AKSA 55
7. Circlophone© by Elvee
8. MikeB's Symasym
9. David Tilbrook's AEM6000
10. Fetzilla
11. Apex FH9 Xrk mode
12. Roenders FC100
13. Cubie3
14. DX Blame
15. VSSA
16. VHex
17. Symef
18. Quasi's Nmos200
19. Very Simple Quasi Complimentary MOSFET Amp
20. Vzaichenko's Vertical CFA-Non Switching Output Stage
21. Vzaichenko's Tubesumo Amp
22. Vzaichenko's Other Projects !
23. Apex SR50 and SR200 ( I didn't listen these systems but maybe anybody can share their experience )
24. Astx - SA2014 BJT (200W@8R, 400W@4R) 8 pairs TTC5200 and TTA1943
25. Astx - SA2015 V-MOSFET (70W@8R, 140W@4R) 3 pairs IRFP240 and IRFP9240
26. Astx - SA2015 V-MOSFET (100W@8R, 200W@4R) 1 pair IXTH80N20L and IXTH48P20P
27. Astx - SA2016 L-MOSFET (70W@8R, 140W@4R) 3 pairs ECX10N20 and ECX10P20
28. Astx - SA2016 L-MOSFET (100W@8R, 200W@4R) 3 pairs ECW20N20 and ECW20P20
29. NAP-140
30. Ovation SX and NX
31. TGM8 - an amplifier based on Rod Elliot P3a
32. PeeCeeBee V4H
33. SC200 Silicon Chip Magazine
34. Peter Blomley's Non-switching Class B amplifier

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[Nico Ras]

You simply take a snapshot of music fed into the amp as well as what comes out the amp, place the two curves on top of one another and analyse it. If the output deviates even so slightly from the input, then the amp is not even worth a listen.

 

[Nico Ras]

Performing simulations and all that nonsense with models of parts that you have no idea is even close to real world is absolutely useless if you want to know if the amp is any good.
A simulation gives you only some indication that in a perfect environment the circuit will work - how well is the question.
Sometimes you want blind people to listen and compare the performance - even more BS.

 

[Nico Ras]

I am always amused how people describe the sound of an amp. If it is not an exact same as the input (not sine wave comparison) then you are describing something what the artefact sounds like signal.
Producing a bunch of numbers is just plain nonsense.