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Admark AD 80
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cravings View Drop Down
Old Croc
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Joined: 30 January 2007
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Points: 7507 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2026 at 9:32am
are they the distros blue arran used to do?

and don't the admark cool front to back, and the ffa back to front.. so hot air exhausted from the admarks will be sucked in to the ffa. keep an eye on that maybe.

but look very tidy. good job.
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Elliot Thompson View Drop Down
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Points: 5365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2026 at 10:17am
Originally posted by madboffin madboffin wrote:

That mains plug is a bit worrying. Probably illegal to import into the UK like that.

And a 30 amp plugtop fuse surely doesn't meet BS1362, so it's falsely marked.

(For the benefit of our friends in the USA, all British 13 amp plugs are fitted with an internal fuse, but 13A is the maximum allowable size)

This doesn't inspire much confidence in the product or its manufacturer...

Thanks for that tit bit! 

I recall when I bought my K 30 years ago, I had an option of plugs based on the Voltage Requirements. I would not be surprised if Admark offered a no connector as an option on their models as well.

Best Regards,



Edited by Elliot Thompson - 07 March 2026 at 10:18am
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Points: 770 		Post Options Post Options   Thanks (0) Thanks(0)   Quote KDW32 Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2026 at 2:38pm
Originally posted by cravings cravings wrote:

are they the distros blue arran used to do?

and don't the admark cool front to back, and the ffa back to front.. so hot air exhausted from the admarks will be sucked in to the ffa. keep an eye on that maybe.

but look very tidy. good job.

Thumbs Up proper good advice
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Earplug View Drop Down
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Points: 7752 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2026 at 3:37pm
"so hot air exhausted from the admarks will be sucked in to the ffa. keep an eye on that maybe."

Yes - very important point when mixing amps in a rack.


Earplugs Are For Wimps!
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adamb00m View Drop Down
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Points: 75 		Post Options Post Options   Thanks (0) Thanks(0)   Quote adamb00m Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2026 at 4:06pm
Penn Elcom distro- but not big enough for this combo of amps - need to replace.

And yes, you are correct on the fan flow, which I didn’t even think to check before purchasing, and I have almost cooked amps like that before - but it was a berry ep2500 and I wasn’t that worried about the warranty, so I just flipped the fans around in the case, which solved the problem and it never had heat issues again.

I’m bit more cautious of doing that with the FFAs… my plan is to make some kind of air guide at the back of the rack…

Once I swap the distro there will be a 1U gap between the Admarks and the FFA - which is the space I will use for the air guide.

Hopefully that will keep it under control - bloody annoying though.


Edited by adamb00m - 07 March 2026 at 5:04pm
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adamb00m View Drop Down
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Points: 75 		Post Options Post Options   Thanks (0) Thanks(0)   Quote adamb00m Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2026 at 10:32pm
Ordered a Powercon plug (NAC3FXXB-W-L) to test if the wire will fit, it does, but it’s a tight fit, which surprises me as it the spec sheet for the plug says 2.5mm max, and the wires measure 4mm - but heyho, they are rated to 20amps, and I think that’s will cover my use - will see how we go.

Hopefully the thermal trip switches on the Penn-Elcom PDUs are happy with short peaks over 16amps per bank if ever required (changed to the 32amp PDU with 8 powercon outputs - split into two banks, with a max load of 16amps per bank).

Had an exchange with Dave at FFA regarding fan flow… he said it’s unlikely to cause any issues.

I’ll still be making some kind of air guide to direct the exhaust from the AD442s down and away from the FFA intake.

To be fair, even after a few hours use, the air coming out of the Admarks doesn’t feel hot, or even heated… but not given them truly hard use running all channels at 4ohm yet.


Edited by adamb00m - 11 March 2026 at 10:34pm
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cravings View Drop Down
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Joined: 30 January 2007
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Points: 7507 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2026 at 1:32am
apologies if you've considered this.. but are you measuring wire diameter, when the figures given on cables are for cross sectional area (mm squared)?
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adamb00m View Drop Down
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Points: 75 		Post Options Post Options   Thanks (0) Thanks(0)   Quote adamb00m Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2026 at 8:09am
Oh, yes, I’m a ‘tard

Edited by adamb00m - 12 March 2026 at 8:15am
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cravings View Drop Down
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Points: 7507 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2026 at 11:15am
nope. if you go back to my earlier days on here, someone pointed this out to me too heh.
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Points: 465 		Post Options Post Options   Thanks (0) Thanks(0)   Quote djkeet Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2026 at 12:23am
Originally posted by Elliot Thompson Elliot Thompson wrote:

My estimate was close enough.

Published Specs: 236 volts output @ 4 ohms (Crest Factor) 13924.00
My Estimate: 14000 watts @ 4 ohms (Crest Factor)

My Estimate was 10000 watts continuous average per channel on a 4 ohm load. The amplifier should hover around 9900 watts per channel continuous average based on the AD 80 Manual offered Taurusty on a 4 ohm load. Admark always used Crest Factor to rate their power. So expect less on Continuous Average Power.

The Peak rails should hover around 360 Volts (Possibly 400 volts with no load) with minimum sag into play @ 8 ohms. 
Around 330 volt rails with a sag @ 4 ohms (Crest Factor). 
Around 280 volt rails with a sag @ 4 ohms (Continuous Average).

The AD 80 is not Bridgeable.

I don't recall exactly where the biggest Powersoft lies in their rails at the moment. But, I do recall it fell within the 300 volt range.

This is a different league of amplifier and, you will definitely need to step up everything to get the most out of this amplifier.

Amperage drawn from a 240-volt Line Source (Based on Published Specifications)
4 ohms Stereo Mode Continuous Average: 82.5 Amps
4 ohms Stereo Mode Crest Factor: 116.0 Amps

Please. No, How can I use the Admark AD 80 on 120 volt line source questions LOL 

Best Regards,  












So its looking like 240V 3Phase 63A min no less and on 120V 100A
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levyte357- View Drop Down
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Points: 8517 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2026 at 12:02pm
Maybe we should consider, how many output devices, are in the AD80, and physical current draw/storage capacity of the PSU(s), before  reading too deeply into published specs.
Global Depopulation - Alive and Killing.
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levyte357- View Drop Down
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Joined: 27 July 2012
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Points: 8517 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2026 at 12:10pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by snowflake snowflake wrote:

interesting comment on the sinbosen website:

GaN material applied to D-series amplifiers!
https://www.sinbosenaudio.com/info/gan-material-applied-to-d-series-amplifiers-i00357i1.html



Interesting indeed.

Sinbosen's amplifiers has always had a strong Home Theater Market following from the days of the Lab Gruppen copies. Their marketing concept appears to be focusing heavily on Frequency Bandwidth (amongst other things) due to the GaN Topology. I am reading many are praising the Admark AD 42 over the Admark AD 60 despite, the Admark AD 42 offers no GaN topology whereas, the Admark AD 60 and, Admark AD 80 does.

So while GaN does offer more benefits than amplifiers offering non-GaN Topology, in the Professional Market, it does not seem to be what many Americans call "A Game Changer" causing an overwhelming difference in the end results. 

Best Regards, 

 

Which is why I'm on the fence regarding the AD60, and AD80.
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