Headphone amplifiers

Adding a volumecontrol to QRV-07

Started by Franz

Replies: 5
Views: 8,312

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

Best headphone am for ~8ohms...?

Started by Bertel

Replies: 3
Views: 6,050

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

BF471/BF472 in QRV01

Started by goldkenn

Replies: 1
Views: 7,130

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

Case for QRV08

Started by joze7205

Replies: 0
Views: 5,155

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

Cleaning the PCB

Started by Houghtkj

Replies: 2
Views: 6,885

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

Headphone amp for AKG K-1000

Started by goldkenn

Replies: 1
Views: 6,280

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

Headphone amplifier for HiFiMAN HE-6

Started by jimvibe

Replies: 7
Views: 9,170

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

My QRV08 Build

Started by Houghtkj

Replies: 7
Views: 9,294

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

Power supply for QRV07

Started by renlute

Pages1 2

Replies: 16
Views: 13,327

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

Problem QRV-09

Started by joBe

Replies: 4
Views: 7,676

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

Problem with QRV07

Started by Bertel

Replies: 7
Views: 7,345

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

QRV-02 support JIN

Started by peranders

Pages1 2

Replies: 21
Views: 16,564

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

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

Started by DDragon80

Replies: 0
Views: 7,853

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

QRV-03 question

Started by krainov

Replies: 9
Views: 8,312

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

QRV-04 as a line stage

Started by peranders

Replies: 0
Views: 5,670

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

QRV-04 failure

Started by savinalexandru

Replies: 8
Views: 10,105

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

QRV-07

Started by AudioSpirit

Replies: 1
Views: 8,703

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

qrv-07 building and test

Started by Jinkslynx

Replies: 2
Views: 6,977

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

QRV-07 DC problem

Started by alerma

Replies: 6
Views: 7,911

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

QRV-07 gain

Started by peterklimo

Replies: 3
Views: 6,781

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

QRV-07 Power supply stage

Started by ColinS

Replies: 1
Views: 5,491

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

QRV-07 problem

Started by peranders

Replies: 0
Views: 5,761

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

QRV-08 (General Questions)

Started by cota

Replies: 9
Views: 8,173

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

QRV-08 - ett fel och ett misstag

Started by maust

Replies: 13
Views: 9,564

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

QRV-08 Build #3

Started by BMF

Replies: 7
Views: 8,497

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

QRV-08 Build Problems/Questions

Started by chinook9

Replies: 10
Views: 9,515

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

QRV-08 Building and test

Started by galouche

Pages1 2 3 4 5

Replies: 71
Views: 49,184

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

QRV-08 C41 and C42

Started by Hayo

Replies: 4
Views: 6,772

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

QRV-08 gain reduction

Started by Discom

Replies: 3
Views: 12,274

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

QRV-08 Headphone amp with current feedback and super ....

Started by peranders

Replies: 9
Views: 11,744

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