Buckeye Amps: Purifi 1ET6525SA (the successor to the 1ET400A)

[JPA]

Then you'll send one to Amir? (hint, hint)

 

[Buckeye Amps]

Then you'll send one to Amir? (hint, hint)

One will be on its way to Amir in about 7-10days.

Though he has his own list/backlog so I can't say how long the review will take once he has it

 

[Thor9981]

Old lady told me, "it's me or the amps."

*looks at amps*

 

[bo_knows]

Old lady told me, "it's me or the amps."

*looks at amps*
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So if you get divorced, she gets to keep the top one?

 

[Thor9981]

So if you get divorced, she gets to keep the top one?

We'll split modules.

 

[bo_knows]

We'll split modules.

LMAO good one!

 

[Thor9981]

Just wanted to give a huge shout out and many, many boatloads of gratitude to @Buckeye Amps for helping me complete this build. One Purifi 3 Ch. and one Hypex 6 Ch. made all the difference in my system. Couldn't be more proud to be a part of the Buckeye family! Been blaring this **** all week! Thank you!

 

[Buckeye Amps]

Adding an FAQ section to the website, any suggestions for common questions I should answer (either for my amps specifically, or for general audio questions for using an amp in setups, etc).

Already going to cover using RCA to XLR cables, gain settings (for the Purifi), pre-out voltage for receivers.

 

[NTK]

Heat dissipation and thermal management. You should be able to deduce idle heat dissipation from the idle power consumption (conservation of energy).

[Edit] Would be great if you can provide temperature measurement results under different operating conditions/environments.

 

[utep10]

I received the 2ch version earlier this week and the amp works as intented (great SQ, gain switch, auto sensing). Very happy with this purchase.

 

[Ap007nyc]

Dylan, When are you planning to allow Amir to review the Purifi 2ch? thx

 

[Buckeye Amps]

Dylan, When are you planning to allow Amir to review the Purifi 2ch? thx

There is a 3ch going to Amir soon for review

 

[Sound of Music]

I am new to the forum, although I have been lurking in the background for about a year and it seems like I have enough exposure and confusion to now join so as to ask some newby type questions. I hope that I am not in the wrong forum, however, the issue of power supplies for the Purifi 7040 came up here so this is where I will start, unless someone tells me where to go (wouldn't be the first time . I am more mechanical than electronic in my conjurings of things and I note that the Hypex power supply being used by most was never designed to drive the newest Purifi 7040. It also does not have "power correction". March Audio is purported to be using a Micro Audio power supply which gives a more spec'd voltage and has this power correction. Audiophonics offers the Connex brand. Who are these companies and do they build their own and can they back up their products. It would seem using common sense but possibly not common knowledge that a power correction might promote longevity. Does this power correction and the increased voltage matter in final sound? I am looking to replace an old Rotel Class D 100W/ch based on ICE technology from 2009. I love the sound but I am missing noticeably some base. I really like Dylan's offerings and just don't want to be upgrading in two years when the world moves to an upgraded PS. Any help here would be most welcome.

 

[Keened]

Who are these companies and do they build their own and can they back up their products. It would seem using common sense but possibly not common knowledge that a power correction might promote longevity. Does this power correction and the increased voltage matter in final sound?

I can't speak for Connex but I know MicroAudio appears to build their own (they're a member on the site and they have a website you can go to). Power correction might make a difference if you have exceedingly low impedance dips (since it can provide some instantaneous additional current from the capcitors) but it shouldn't affect the output voltage from what I understand, it just makes the thermal efficiency/losses better by not being forced to draw extra current from the outlet. The extra voltage compared to the standard Hypex comes from the power rail levels that are offered, they could build one to a similar spec and just haven't.

Less heat does tend to equate to longer electronics life but I'm not sure if it's a significant factor in MTBF for any of the parts used. For 99% of people the extra voltage (and thus overall power potential) is going to make 0 difference. Unless you have unusually inefficient or monstrously large SPL requirements (PA systems, etc), in which case please provide more information on the usage case.

The missing bass may be a power limitation of your current amps, but you'd be better off buying powered subwoofers and integrating them into the system than pumping more power into towers.

 

[GeorgeBynum]

Power correction ...

Is this what we in the industrial world call "power factor correction"? If so, it is accomplished by "active front end" AC to DC converters. It is apparently now well understood (not by me, sorry) technology and minimizes transient loading of the line(s). @Buckeye Amps , are you aware of this, and what power supply providers use it? My experience is with VFD / VSD inverter drives.

 

[Livewire]

Those MicroAudio power supplies look very nice, and possibly a better match for Purifi than the one from Hypex.

 

[JohnnyNG]

I know of several people using the Okto dac 8 with a 10V output paired with purifi amps, bypassing the buffer. Can't imagine a 3 way switch is materially more expensive than a 2 way....Would give more flexibility.

I know this ship has sailed but would have liked the bypass option for my Topping Pre90. The Audiophonics 400ET mono has bypass but uses SMPS600A400 and I love that the Buckeye uses the 1200.

 

[Keened]

Is this what we in the industrial world call "power factor correction"? If so, it is accomplished by "active front end" AC to DC converters.

At least that's what I thought they were referring to. In the industrial world you also have direct access to three phase AC so there might be additional tricks or methods that make more sense when you're not locked to a single waveform.

 

[Rottmannash]

My 3 channel Purifi arrived last night. Sounds great and love the auto sensing and 3 gain selection.

 

[Icboschert]

Received mine yesterday and the upgrade from the MRX 520 internal amps is BIG. The bass on my F226Bes has really come to life. Auto-sensing works great.