Headphone amplifiers

QRV-08 C41 and C42

Started by Hayo

Replies: 4
Views: 8,764

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

QRV-08 Building and test

Started by galouche

Pages1 2 3 4 5

Replies: 71
Views: 63,050

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

QRV-08 Build Problems/Questions

Started by chinook9

Replies: 10
Views: 12,340

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

QRV-08 Build #3

Started by BMF

Replies: 7
Views: 10,910

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

QRV-08 - ett fel och ett misstag

Started by maust

Replies: 13
Views: 12,597

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

QRV-08 (General Questions)

Started by cota

Replies: 9
Views: 8,887

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

QRV-07 problem

Started by peranders

Replies: 0
Views: 6,169

March 20, 2006, 09:45:07 PM
by peranders

QRV-07 Power supply stage

Started by ColinS

Replies: 1
Views: 5,918

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

QRV-07 gain

Started by peterklimo

Replies: 3
Views: 7,308

December 08, 2007, 02:23:37 PM
by peranders

QRV-07 DC problem

Started by alerma

Replies: 6
Views: 8,629

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

qrv-07 building and test

Started by Jinkslynx

Replies: 2
Views: 7,500

May 14, 2007, 06:43:22 PM
by Jinkslynx

QRV-07

Started by AudioSpirit

Replies: 1
Views: 9,740

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

QRV-04 failure

Started by savinalexandru

Replies: 8
Views: 12,740

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

QRV-04 as a line stage

Started by peranders

Replies: 0
Views: 6,106

October 09, 2006, 02:39:00 PM
by peranders

QRV-03 question

Started by krainov

Replies: 9
Views: 10,957

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

QRV-03 or QRV-09 with Burson Audio V5-OPA-S?

Started by DDragon80

Replies: 0
Views: 9,262

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

QRV-03 gain

Started by hms

Replies: 0
Views: 317

May 15, 2024, 12:58:36 PM
by hms

QRV-02 support JIN

Started by peranders

Pages1 2

Replies: 21
Views: 18,081

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

Problem with QRV07

Started by Bertel

Replies: 7
Views: 7,968

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

Problem QRV-09

Started by joBe

Replies: 4
Views: 9,596

January 19, 2014, 05:00:23 PM
by peranders

Power supply for QRV07

Started by renlute

Pages1 2

Replies: 16
Views: 14,379

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

My QRV08 Build

Started by Houghtkj

Replies: 7
Views: 11,829

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

Headphone amplifier for HiFiMAN HE-6

Started by jimvibe

Replies: 7
Views: 11,533

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

Headphone amp for AKG K-1000

Started by goldkenn

Replies: 1
Views: 6,708

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

Cleaning the PCB

Started by Houghtkj

Replies: 2
Views: 8,549

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

Case for QRV08

Started by joze7205

Replies: 0
Views: 5,701

October 27, 2009, 07:51:43 PM
by joze7205

BF471/BF472 in QRV01

Started by goldkenn

Replies: 1
Views: 7,734

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

Best headphone am for ~8ohms...?

Started by Bertel

Replies: 3
Views: 6,581

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

Adding a volumecontrol to QRV-07

Started by Franz

Replies: 5
Views: 8,909

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