RE: Full blown Kal Rubinson review and in depth JA measurements....

Posted by emailtim (A) on December 6, 2024 at 13:34:10

In Reply to: Full blown Kal Rubinson review and in depth JA measurements.... posted by AbeCollins on December 6, 2024 at 13:20:11:

Thanks for the update.

FWIW, Buckeye usually has a 3 position gain switch. They try to keep the 3 gains consistent so one can mix and match Buckeye Purifi amps with Buckeye Hypex/NCore amps.

You can see the 3 position High/Low/Mid switch on their website image.

They also offer a 3 position trigger switch (Auto, On, 12V).

They do not offer opamp rolling, trying to stay consistent with the OEM reference design.

Case is made in Canada, not Ghent Audio from China like VTV's cases.

From Buckeye's webpage:

Custom I/O Board:

Neutrik XLR connectors
Gold plated 5-way speaker binding posts
Low, Med, High Gain settings
TI OPA1656 OP Amp
TI TPS7A30/49 Voltage Regulators
Auto Sensing On/Off
12v trigger On/Off
Muted soft-start/shutdown (minimizes speaker "pop" when turning on and off)
Clipping Indication (via front power LED)
Error Indication (via front power LED)

Gain Settings

4 ohm - 25.5dB/2.9Vrms (High), 20.5dB/5.2Vrms (Medium), 15.5dB/9.2Vrms (Low)
8 ohm - 25.5dB/2.9Vrms (High), 20.5dB/5.2Vrms (Medium), 15.5dB/9.2Vrms (Low)

High input gain setting matches up with the input gain of the Hypex amplifiers, perfect for those wanting to mix Purifi amplifiers with Hypex amplifiers (such as for a home theater setup).

RCA vs. XLR

While our amplifiers use XLR inputs, it is perfectly fine (and fully supported by Purifi) for customers to use RCA to XLR cables to connect the amplifier to a source that only has RCA outputs.
Please see our FAQ section for more information if necessary.

.

2022/03/30 Historical Records CENSORED

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Follow Ups Full Thread

Topic - Paging Kal - "Buckeye Purifi 1ET-9040BA monoblock, in for review" - emailtim 16:26:01 12/02/24 (25)

Sheesh! So many overpriced amplifiers - jedrider 08:50:26 12/13/24 (3)

Are they really "overpriced" ? Or are they truly more expensive to build and sell ? (nt - peppy m. 07:05:59 12/14/24 (1)

RE: Are they really "overpriced" ? Or are they truly more expensive to build and sell ? (nt - John Elison 16:09:57 12/14/24 (0)

You got that right... - John Elison 14:32:00 12/13/24 (0)

January Issue, Page 77 (NT) - Kal Rubinson 13:56:38 12/03/24 (14)

Like H.G. Wentworth... - Ozzie 15:13:54 12/05/24 (0)

Anyone get their January issue yet ? - AbeCollins 19:53:07 12/03/24 (10)

RE: Anyone get their January issue yet ? - Kurtle 20:23:08 12/04/24 (7)

RE: Anyone get their January issue yet ? - josh358 14:16:41 12/06/24 (0)

RE: Anyone get their January issue yet ? - emailtim 17:38:19 12/05/24 (4)

Full blown Kal Rubinson review and in depth JA measurements.... - AbeCollins 13:20:11 12/06/24 (3)

RE: Full blown Kal Rubinson review and in depth JA measurements.... - Ric Schultz 20:59:41 12/11/24 (1)

RE: Full blown Kal Rubinson review and in depth JA measurements.... - AbeCollins 07:20:16 12/12/24 (0)

RE: Full blown Kal Rubinson review and in depth JA measurements.... - emailtim 13:34:10 12/06/24 (0)

RE: Anyone get their January issue yet ? - AbeCollins 07:50:09 12/05/24 (0)

RE: Anyone get their January issue yet ? - emailtim 18:02:09 12/04/24 (1)

RE: Anyone get their January issue yet ? - AbeCollins 19:40:10 12/04/24 (0)

Ooops! NT - cawson@onetel.com 15:56:03 12/03/24 (0)

Thanks much !!! (NT) - emailtim 13:59:08 12/03/24 (0)

RE: Paging Kal - "Buckeye Purifi 1ET-9040BA monoblock, in for review" - cawson@onetel.com 12:03:29 12/03/24 (3)

"I think they wouldn't consider a brand that sells direct......." - Kal Rubinson 08:13:49 12/13/24 (0)

Handmade phono cartridges? - farfetched 07:02:05 12/13/24 (0)

RE: Paging Kal - "Buckeye Purifi 1ET-9040BA monoblock, in for review" - emailtim 12:18:34 12/03/24 (0)

RE: Paging Kal - "Buckeye Purifi 1ET-9040BA monoblock, in for review" - Cougar 10:15:12 12/03/24 (1)

RE: Paging Kal - "Buckeye Purifi 1ET-9040BA monoblock, in for review" - emailtim 10:25:30 12/03/24 (0)

Follow Ups

RE: Full blown Kal Rubinson review and in depth JA measurements.... - emailtim 13:34:10 12/06/24 (0)

RE: Full blown Kal Rubinson review and in depth JA measurements....

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