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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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Replies: 71
Views: 48,139

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

QRV08 Setup Instructions

Started by BMF

Pages1 2 3 4 5 6 7

Replies: 97
Views: 46,181

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

QRV-08 hum

Started by CapRock

Pages1 2 3 4 5

Replies: 63
Views: 37,797

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

QRV-08 power up

Started by svarthvitt

Pages1 2 3

Replies: 43
Views: 28,971

June 13, 2019, 09:11:47 PM
by svarthvitt

QRV-02 support JIN

Started by peranders

Pages1 2

Replies: 21
Views: 15,535

May 04, 2006, 11:42:29 PM
by peranders

Replies: 14
Views: 14,439

August 08, 2010, 11:05:28 PM
by renlute

QRV01 output stage

Started by goldkenn

Pages1 2

Replies: 19
Views: 13,498

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

Power supply for QRV07

Started by renlute

Pages1 2

Replies: 16
Views: 12,674

December 17, 2010, 05:52:55 PM
by peranders

Replies: 9
Views: 11,106

June 02, 2006, 10:48:29 AM
by peranders

Replies: 4
Views: 9,213

June 17, 2010, 08:45:15 PM
by peranders

Replies: 8
Views: 9,130

December 06, 2013, 09:38:49 PM
by peranders

Replies: 11
Views: 9,057

January 17, 2015, 09:47:29 AM
by peranders

Replies: 9
Views: 8,847

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

Replies: 3
Views: 8,826

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

Replies: 13
Views: 8,805

March 19, 2015, 10:55:57 PM
by maust

Replies: 8
Views: 8,406

May 09, 2016, 02:29:55 PM
by savinalexandru

Replies: 10
Views: 8,176

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

Replies: 7
Views: 8,173

May 04, 2012, 08:43:10 PM
by peranders

Replies: 7
Views: 8,120

June 12, 2015, 08:02:27 PM
by peranders

Replies: 5
Views: 7,797

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

QRV-07

Started by AudioSpirit

Replies: 1
Views: 7,360

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

Replies: 9
Views: 7,288

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

Replies: 9
Views: 7,282

May 05, 2018, 01:27:58 PM
by peranders

QRV-08 Build #3

Started by BMF

Replies: 7
Views: 7,172

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

Replies: 5
Views: 7,056

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

QRV09

Started by csyao

Replies: 4
Views: 6,978

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

Replies: 7
Views: 6,912

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

QRV-07 DC problem

Started by alerma

Replies: 6
Views: 6,888

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

Replies: 5
Views: 6,884

March 02, 2014, 10:32:35 AM
by jhmvanbeek

Replies: 6
Views: 6,621

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

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