The "Official" Nord Acoustics Thread-Hypex Class D Based Amplifiers - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 75 Old 05-13-2017, 11:16 PM - Thread Starter
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The "Official" Nord Acoustics Thread-Hypex Class D Based Amplifiers

Nord Acoustics offers numerous Class D Amplification options based on Hypex modules. Monoblocks, stereo and custom multi-channel amps up to 8 channels making a perfect surround/Atmos amp or per your needs.

I have no affiliation with Nord or incentive by steering traffic their way, I just felt in my research of quality yet not stupid expensive amps this thread could have really helped me.

https://www.nordacoustics.co.uk/

I just so happened to be in the market for an amp to power my JTR 215RT's and a fellow enthusiast who loves his DIY Hypex module based amps turned me onto Nord acoustics. I was heavily leaning on a Pascal based D-sonic which I still feel is a amazing option! I also was intrigued by the Digital Amplifier Companies options which are exceptional units! But in the end for me Nord Acoustics combinations of performance of the Hypex modules, cost Nord charges and exceptional quality was the deciding factor. People can have an amplifiers that rate at true RMS wattage, around 120db SNR, audiophile quality, high efficiency Class D tech. Hypex amp modules are extremely low THD+N rated across all units. The NC500 unit measures %0.0005 THD+N at 1 watt!



















OP-Amp options if thats your thing

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post #2 of 75 Old 05-13-2017, 11:17 PM - Thread Starter
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post #3 of 75 Old 05-13-2017, 11:20 PM - Thread Starter
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The amp I will have on order very soon will be a custom configuration multi channel using three NC502MP (2x500watts) modules each bridged for a total of three channels giving around 1kw per each of the three channels. I'm not sure there is another amp on the market with a an SNR, THD+N, true RMS rated wattage, craftsmanship and price. My three channel beast is quoted at 1949Euro plus 75Euro. I may possibly have them build it in the nicer SE chassis but not sure yet, I think it's about an additional 120Euro.

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post #4 of 75 Old 05-14-2017, 02:52 AM
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These do look like excellent values. Just a quick comparison, all for 7-channel varieties using 8-ohm ratings:

D-Sonic M3a-2800-7 - $3,075 (400wpc)
Wyred4Sound MC 7150 - $1,599 (120wpc, no balanced inputs)
Axiom Audio ADA 1000 - $1,740 (125wpc, no balanced inputs)

Nord One MP NC252 - $2,286 (with current exchange rates) (200wpc)

So, it's a bit more than the Wyred4Sound or Axiom offerings, but has balanced inputs, and the NCore modules, vs Axiom's in-house design and whatever Wyred4Sound uses (Icepower maybe?).

Emotiva supposedly has a 7-channel Icepower 125wpc amp coming out under their Emersa line for $999 if they ever manage to get it out the door.

I'm not sure if I'm missing any other options in the reasonably-priced high-quality class D multichannel arena, but Nord certainly looks appealing.

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post #5 of 75 Old 05-14-2017, 10:52 AM
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Originally Posted by jlpowell84 View Post
I was heavily leaning on a Pascal based D-sonic which I still feel is a amazing option!
I also understand that Dennis is making some changes to his amp modules that will make them even better. No details on what that is, but if you are interested in finding out more, give him a call! Always nice when the owner of a company is the person you actually talk to.

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post #6 of 75 Old 05-14-2017, 12:12 PM - Thread Starter
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I also understand that Dennis is making some changes to his amp modules that will make them even better. No details on what that is, but if you are interested in finding out more, give him a call! Always nice when the owner of a company is the person you actually talk to.


Yes I agree and FULLY endorse him and D-Sonic. And I am not writing a D-Sonic off just yet I have had email dialogue with Him and a phone call, amazing service. I do like that Pascal modules will have a little more power.


http://www.paschttp://www.pascal-aud...r-modules.html
Here is a THD graph of the Pascal which has influenced me toward the Hypex modules



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post #7 of 75 Old 05-14-2017, 12:13 PM - Thread Starter
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The "Official" Nord Acoustics Thread-Hypex Class D Based Amplifiers

http://www.pascal-audio.com/download..._Sheet-2_5.pdf

But before I make my absolute final decision I will give Dennis another platform to 'sell' me over the Nord offering.

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post #8 of 75 Old 05-14-2017, 02:49 PM
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http://www.pascal-audio.com/download..._Sheet-2_5.pdf

But before I make my absolute final decision I will give Dennis another platform to 'sell' me over the Nord offering.
Well, either way you go, I'll be looking forward to hearing your impressions! Nord definitely looks interesting. I'll have to look more into this company.

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post #9 of 75 Old 05-14-2017, 07:53 PM - Thread Starter
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Well, either way you go, I'll be looking forward to hearing your impressions! Nord definitely looks interesting. I'll have to look more into this company.
I agree, I have totally geeked out the last several days over looking into Nord and chatting with a fellow know enthusiast around here about Hypex Modules in general. Basically everything I brought to him in our lengthy email conversation he compared to Hypex spec wise and nothing can touch it.

I will be looking forward too. Currently I have a Crest Pro Lite 7.5 sub amp running my mains and it's not the best...
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post #10 of 75 Old 05-14-2017, 07:55 PM - Thread Starter
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Any Nord owners out there? Would love to hear from you
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post #11 of 75 Old 05-14-2017, 10:38 PM - Thread Starter
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Quote:
Originally Posted by TuteTibiImperes View Post
These do look like excellent values. Just a quick comparison, all for 7-channel varieties using 8-ohm ratings:

D-Sonic M3a-2800-7 - $3,075 (400wpc)
Wyred4Sound MC 7150 - $1,599 (120wpc, no balanced inputs)
Axiom Audio ADA 1000 - $1,740 (125wpc, no balanced inputs)

Nord One MP NC252 - $2,286 (with current exchange rates) (200wpc)

So, it's a bit more than the Wyred4Sound or Axiom offerings, but has balanced inputs, and the NCore modules, vs Axiom's in-house design and whatever Wyred4Sound uses (Icepower maybe?).

Emotiva supposedly has a 7-channel Icepower 125wpc amp coming out under their Emersa line for $999 if they ever manage to get it out the door.

I'm not sure if I'm missing any other options in the reasonably-priced high-quality class D multichannel arena, but Nord certainly looks appealing.
Yea Ive read W4S uses Ice modules which subjectively have not had the praise Pascal and Hypex does. But we are talking some thin margins...

And the NC252MP is rated at 250 watts correct? and Hypex rates RMS not peak...

I posted in another thread about a 3 channel config being appealing using either the NC252MP (250 watts/channel) or NC502MP (500 watts/channel)
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post #12 of 75 Old 05-15-2017, 11:32 PM - Thread Starter
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Interesting tidbit here. They are working with Nord on amplification for their Alcon Loudspeaker system

http://www.alconsaudio.com/pro-ribbo...-new-fans-ise/
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post #13 of 75 Old 05-24-2017, 03:19 PM
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Any Nord owners out there? Would love to hear from you
I have the NC500 SE stereo and mono and they sound very good and clean! If you go with the SE case, ask Colin to use the "standard" copper binding post (in the MP series) in lieu of the CHK. I am not a fan of the CHK post (brass) and actually replaced mine with solid copper version. Quick connect should also be changed out for the brass ones from Madisound. I replaced the XLR to Furutech version as well. Made a fabulous amp into a referenced amp.

Recommend venting the SE case. The standard case is very well vented! They get pretty hot after hours of playing and I noticed thermal compression. I drilled holes on mine and it worked. Maybe Colin can provide factory vented ones.

Short story, they are worth every penny and more, IMHO Best amps I have used in my system. Especially if you go the extra few steps in getting the good binding posts, XLRs and quick connects. Let me know if you have any specific questions.
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post #14 of 75 Old 05-27-2017, 12:26 PM
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Silly question: being from the UK, do Nord Acoustics amps take banana plugs? And what kind of lead time were you quoted, Jason?

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post #15 of 75 Old 05-27-2017, 12:58 PM
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Silly question: being from the UK, do Nord Acoustics amps take banana plugs? And what kind of lead time were you quoted, Jason?
They only accept apple plugs.

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So how do these amps compare to Rotel Class D amps? I have RMB-1575 (5x250) and a RMB 1565 (5x100) both are ice power class D amps. for 4ohm speakers these amps will double the watts per channel. For example I have B&W CWM7.3 speakers up front and they are 4ohm speakers so the RMB-1575 has three channels pushing 500 watts per channel and the rears are 8oHM speakers so they get 250 watts per channel. I know NAD us the Hypex technology but they are crazy expensive. If these amps are better than my Rotels I( may be interested in a upgrade.
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post #17 of 75 Old 05-27-2017, 04:45 PM
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I've been looking at these amps as well and I must say they look very interesting! These amps measure very well. At this Swedish forum they have some of the best amps with manufacturer measurements in the same graphs, just expand the spoilers http://www.faktiskt.se/phpBB3/viewto...1815&p=1784235. As you can see both NC400(diy version) and NC500(oem version) variants measure very good. I've been looking at the 8 channel Nord amps with the 252 modules. Though if you look at the spec sheets you can see that the watts that they provide is actually peak. Continuous delivery for the NC500 amps is about 100W but they peak way higher. That's what their PDFs says anyway. In any case music is dynamic so probably not an issue. That's the only gripe I have with these Hypex modules atm is that continuous watts is not that high. But man the noise floor and distortion measurements are truly excellent.

As for the Rotels I think they use the Icepower which is not even close in performance to these Hypex amps when it comes to sounding good.

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I've been looking at these amps as well and I must say they look very interesting! These amps measure very well. At this Swedish forum they have some of the best amps with manufacturer measurements in the same graphs, just expand the spoilers http://www.faktiskt.se/phpBB3/viewto...1815&p=1784235. As you can see both NC400(diy version) and NC500(oem version) variants measure very good. I've been looking at the 8 channel Nord amps with the 252 modules. Though if you look at the spec sheets you can see that the watts that they provide is actually peak. Continuous delivery for the NC500 amps is about 100W but they peak way higher.
I'm interested in the 252 as well. Currently I have a NAD M27 and a Wyred MMC-7, but I'm falling one channel short to do 9.4.6 with my Trinnov Altitude 16/24. I want to stick with Class D for the form factor and reduced heat, and I'm love to get another Hypex-based amp (Wyred is Pascal, I believe, and it generates a lot of heat compared to the M27).

Only problem is lead time...I'm doing a pro Trinnov calibration in two weeks, and I'd need it in about 10 days. I sent Nord an email to see if they can come through and (also) support bananas . Let's keep our fingers crossed...

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post #19 of 75 Old 05-28-2017, 04:22 AM
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I'm interested in the 252 as well. Currently I have a NAD M27 and a Wyred MMC-7, but I'm falling one channel short to do 9.4.6 with my Trinnov Altitude 16/24. I want to stick with Class D for the form factor and reduced heat, and I'm love to get another Hypex-based amp (Wyred is Pascal, I believe, and it generates a lot of heat compared to the M27).

Only problem is lead time...I'm doing a pro Trinnov calibration in two weeks, and I'd need it in about 10 days. I sent Nord an email to see if they can come through and (also) support bananas . Let's keep our fingers crossed...
Continuous power from the 252 modules is 50W and the 200W peak in 8Ohm is with 1%THD at 1kHz. That's pretty much all that I'm a bit skeptical about. But that would still mean about 170W or so of clean power when needed. But otherwise these amps look like a great deal. 9.1(4).6 sounds like a cool setup. My plan for the 8 channel Nord amp, should I buy it, is to power all surrounds and atmos speakers in a 7.1.4 setup. LCRs will have something a bit beefier.

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post #20 of 75 Old 05-28-2017, 12:21 PM
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Continuous power from the 252 modules is 50W and the 200W peak in 8Ohm is with 1%THD at 1kHz. That's pretty much all that I'm a bit skeptical about. But that would still mean about 170W or so of clean power when needed. But otherwise these amps look like a great deal. 9.1(4).6 sounds like a cool setup. My plan for the 8 channel Nord amp, should I buy it, is to power all surrounds and atmos speakers in a 7.1.4 setup. LCRs will have something a bit beefier.
Pretty much what I was going to do...I heard back from Colin and he told me he couldn't make the timing, so it's a moot point. Apparently based on a Google search he's a one-person shop, but a very industrious one.

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post #21 of 75 Old 05-28-2017, 02:47 PM
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Originally Posted by philipbtz View Post
Continuous power from the 252 modules is 50W and the 200W peak in 8Ohm is with 1%THD at 1kHz. That's pretty much all that I'm a bit skeptical about. But that would still mean about 170W or so of clean power when needed. But otherwise these amps look like a great deal. 9.1(4).6 sounds like a cool setup. My plan for the 8 channel Nord amp, should I buy it, is to power all surrounds and atmos speakers in a 7.1.4 setup. LCRs will have something a bit beefier.
They do have the custom series where you can use the NC500 and NC502 for front channels and the NC252 modules for rears in the same case. Still, looking at the Hypex data sheets, it looks like the 8ohm RMS on the NC500 modules is just 100wpc, so I am a bit annoyed that Nord is advertising peak power instead of RMS that's typical of other higher-end amp manufacturers, that comes across as a bit shady.

Strangely, ATI is advertising that they use the NC500 modules in their nCore-based amps, but they're advertising 200wpc RMS into 8ohms using the NC500 modules, that's twice the power output that the Hypex data sheets state those modules do. I wonder why those numbers don't match...

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post #22 of 75 Old 05-28-2017, 03:08 PM
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Originally Posted by TuteTibiImperes View Post
They do have the custom series where you can use the NC500 and NC502 for front channels and the NC252 modules for rears in the same case. Still, looking at the Hypex data sheets, it looks like the 8ohm RMS on the NC500 modules is just 100wpc, so I am a bit annoyed that Nord is advertising peak power instead of RMS that's typical of other higher-end amp manufacturers, that comes across as a bit shady.

Strangely, ATI is advertising that they use the NC500 modules in their nCore-based amps, but they're advertising 200wpc RMS into 8ohms using the NC500 modules, that's twice the power output that the Hypex data sheets state those modules do. I wonder why those numbers don't match...
It's shady indeed. Manufacturers using these modules as well reviewers are all talking about hundreds of watts. I don't really like when things don't really line up so that's why I thought I'd ask around a bit first. To be fair this is a pretty common way of stating power figures. But like you said, you are use to seeing high end manufacturers state RMS. But I don't know to be honest if it's important. As long as you're not listening to test tones maybe it's enough. 50 or 100W of continuous power into a speaker produces quite a lot of sound.

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post #23 of 75 Old 06-09-2017, 08:41 AM
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Originally Posted by jlpowell84 View Post
The amp I will have on order very soon will be a custom configuration multi channel using three NC502MP (2x500watts) modules each bridged for a total of three channels giving around 1kw per each of the three channels.
Are you going to do anything special to the custom order to allow the modules to bridge?

I have a 4-channel Nord amp using two NC502MP modules. I just received delivery and am setting up and testing now.
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post #24 of 75 Old 06-09-2017, 10:28 AM
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Originally Posted by GTA_S6 View Post
Are you going to do anything special to the custom order to allow the modules to bridge?

I have a 4-channel Nord amp using two NC502MP modules. I just received delivery and am setting up and testing now.
How do they sound and ehat amps did you use before?

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post #25 of 75 Old 06-09-2017, 10:53 AM - Thread Starter
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Originally Posted by GTA_S6 View Post
Are you going to do anything special to the custom order to allow the modules to bridge?



I have a 4-channel Nord amp using two NC502MP modules. I just received delivery and am setting up and testing now.


The bridgeable feature is done at Nord before leaving. It's technically a custom amp.

Tell us what you think!


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post #26 of 75 Old 06-12-2017, 07:13 AM
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Originally Posted by philipbtz View Post
How do they sound and ehat amps did you use before?
Prior to the Nord I used a stereo NAD C275BEE which is rated at 150w/ch at 0.008% THD. The Nord 4 channel was meant to use to power my L/C/R which are Dynaudio Focus series or bridge to power just the L/R. For my pre I'm using a Denon AVRX4200 which also powers my other satellite speakers.

I've tested for a couple of weeks and to me the sound quality is very similar to my NAD which was an excellent amp. I've not pushed them as my HT room is not that large.
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post #27 of 75 Old 06-12-2017, 07:49 AM
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Originally Posted by jlpowell84 View Post
The bridgeable feature is done at Nord before leaving. It's technically a custom amp.
Tell us what you think!
I asked Colin about the ability to bridge and he referenced a page from the Hypex NC502MP spec sheet that mentioned the module itself had the bridge circuitry built in. That's why I asked if you knew what specifically Nord would do to your amps that may be different from the standard MP amp.

I think the amp in the regular case looks great and Colin has been excellent to deal with.

I am on my second amp which now uses a larger case for better heat dissipation. I experienced a couple of strange issues with my first amp. The startup 'pop' was much louder than I expected and I had a some fluttering noise artefacts that I could reproduce most of the time. I tried a couple pre-amps and the issues were the same.

Colin was great and sent a courier to pick up my amp and built me a new one. He says he did not experience any of the issues with the amp I sent back.

I just received the new Nord 4-channel amp and I'm still testing now. I do have an issue where Ch 3,4 do not seem to power up correctly ie. no sound from those speakers. A power cycle of the amp seems to resolve this but it is still odd.

Lastly, I use Audessey MultiEQXT32 room correction built into my Denon pre-amp. I get a phase warning that my polarity may be reversed with any speaker connected to the Nord which is L/C/R in my case. I don't get that warning using my previous NAD C275BEE amp or the internal Denon amp with the same speakers in the same position.

The Nord does sound great once I do my double power cycle. The sound is comparable to the NAD amp which is a very low distortion unit.

When do you expect delivery of your custom amp?
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post #28 of 75 Old 06-13-2017, 12:03 PM - Thread Starter
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Originally Posted by GTA_S6 View Post
I asked Colin about the ability to bridge and he referenced a page from the Hypex NC502MP spec sheet that mentioned the module itself had the bridge circuitry built in. That's why I asked if you knew what specifically Nord would do to your amps that may be different from the standard MP amp.

I think the amp in the regular case looks great and Colin has been excellent to deal with.

I am on my second amp which now uses a larger case for better heat dissipation. I experienced a couple of strange issues with my first amp. The startup 'pop' was much louder than I expected and I had a some fluttering noise artefacts that I could reproduce most of the time. I tried a couple pre-amps and the issues were the same.

Colin was great and sent a courier to pick up my amp and built me a new one. He says he did not experience any of the issues with the amp I sent back.

I just received the new Nord 4-channel amp and I'm still testing now. I do have an issue where Ch 3,4 do not seem to power up correctly ie. no sound from those speakers. A power cycle of the amp seems to resolve this but it is still odd.

Lastly, I use Audessey MultiEQXT32 room correction built into my Denon pre-amp. I get a phase warning that my polarity may be reversed with any speaker connected to the Nord which is L/C/R in my case. I don't get that warning using my previous NAD C275BEE amp or the internal Denon amp with the same speakers in the same position.

The Nord does sound great once I do my double power cycle. The sound is comparable to the NAD amp which is a very low distortion unit.

When do you expect delivery of your custom amp?
I meant more just that it's config'd that way from Sir Collin Like just two sets of binding posts, two rather than four sets of inputs, internal wiring, etc.

Maybe ask Collin about the Polarity thing.

I ended up getting three Golden Cherry Maraschino Monoblocks from the Digital Amp Co. But I still have intentions to get a Nord Who doesn't like more toys! And these amps are greatly priced, look good and perform well!

Thats great to hear Nord's customer service was top notch.
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post #29 of 75 Old 11-26-2017, 08:33 PM
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has anyone pulled the trigger on one of these amps yet?
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post #30 of 75 Old 11-28-2017, 08:53 AM
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has anyone pulled the trigger on one of these amps yet?
I've been close a few times now but in the end I always choose to spend my money elsewhere. REALLY gonna be needing new amps Q1 or Q2 next year so maybe then I'll look into it further. These are super interesting imo.

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