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Hi!

Welcome to my DIY audio forum. The forum SW has been reset and unfortunately there were some problems with backup files so a few posts were lost, nothing important though.

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Per-Anders Sjöström

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Headphone amplifiers

QRV-02, QRV-03, QRV04, QRV-08 and QRV-09 Headphone amplifiers

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QRV-07 DC problem

Started by alerma

Replies: 6
Views: 6,640

January 01, 2007, 10:16:32 AM
by alerma

Replies: 4
Views: 5,259

January 31, 2017, 08:38:38 PM
by peranders

QRV-07

Started by AudioSpirit

Replies: 1
Views: 7,071

September 13, 2005, 07:15:26 AM
by peranders

Replies: 7
Views: 6,140

March 17, 2010, 06:06:32 PM
by peranders

Replies: 3
Views: 4,958

March 25, 2010, 05:52:19 AM
by qusp

QRV-08 Build #3

Started by BMF

Replies: 7
Views: 6,663

January 11, 2017, 12:25:18 AM
by BMF

QRV08 Setup Instructions

Started by BMF

Pages1 2 3 4 5 6 7

Replies: 97
Views: 42,802

July 25, 2016, 05:28:38 AM
by BMF

Replies: 10
Views: 3,577

January 12, 2025, 08:40:08 PM
by peranders

QRV-08 hum

Started by CapRock

Pages1 2 3 4 5

Replies: 63
Views: 36,278

April 27, 2011, 08:23:05 PM
by peranders

Replies: 7
Views: 6,625

January 20, 2011, 08:54:29 PM
by peranders

Replies: 2
Views: 4,943

July 24, 2018, 04:12:51 PM
by chinook9

Replies: 4
Views: 5,509

March 20, 2019, 11:03:23 AM
by peranders

Replies: 10
Views: 7,700

April 26, 2017, 04:32:13 PM
by chinook9

Replies: 1
Views: 4,180

July 21, 2009, 03:50:54 PM
by peranders

Replies: 1
Views: 4,845

July 24, 2011, 10:39:17 PM
by peranders

Replies: 9
Views: 6,999

February 16, 2010, 11:56:59 AM
by qusp

QRV09

Started by csyao

Replies: 4
Views: 6,547

June 08, 2011, 04:31:51 AM
by csyao

Replies: 0
Views: 5,778

August 09, 2016, 04:52:24 PM
by DDragon80

Replies: 9
Views: 8,499

March 04, 2008, 12:35:03 PM
by peranders

Replies: 3
Views: 8,316

September 12, 2019, 07:30:03 AM
by peranders

QRV09 Voltage

Started by Forte

Replies: 4
Views: 5,604

November 24, 2014, 05:58:14 PM
by Forte

Replies: 5
Views: 6,798

July 23, 2007, 09:18:29 AM
by peranders

Replies: 71
Views: 45,574

August 24, 2012, 06:16:42 PM
by galouche

Replies: 1
Views: 4,889

November 08, 2008, 06:17:25 PM
by peranders

QRV01 output stage

Started by goldkenn

Pages1 2

Replies: 19
Views: 12,918

August 30, 2010, 08:14:23 AM
by peranders

Replies: 1
Views: 5,711

March 19, 2011, 04:16:51 PM
by peranders

Replies: 6
Views: 6,381

June 17, 2010, 08:44:50 PM
by peranders

Replies: 4
Views: 5,151

May 02, 2016, 11:54:47 AM
by peranders

Replies: 2
Views: 5,214

April 02, 2012, 08:25:29 PM
by Houghtkj

Replies: 5
Views: 7,371

March 22, 2012, 07:57:26 PM
by peranders

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