Headphone amplifiers

Adding a volumecontrol to QRV-07

Started by Franz

Replies: 5
Views: 8,811

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

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

Started by DDragon80

Replies: 0
Views: 8,967

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

Problem QRV-09

Started by joBe

Replies: 4
Views: 9,123

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

QRV-08 Place to connect PWR LED

Started by chinook9

Replies: 4
Views: 9,587

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

QRV09 Capacitor wrong size

Started by jhmvanbeek

Replies: 5
Views: 9,596

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

QRV-07

Started by AudioSpirit

Replies: 1
Views: 9,635

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

QRV09

Started by csyao

Replies: 4
Views: 9,839

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

QRV-08 Build #3

Started by BMF

Replies: 7
Views: 10,289

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

QRV-03 question

Started by krainov

Replies: 9
Views: 10,332

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

QRV06 topologie for power amplifier

Started by Digora

Replies: 9
Views: 10,334

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

QRV-08 Parts Selection

Started by Houghtkj

Replies: 5
Views: 10,404

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

Simple board for THS6012 (TPA6120)

Started by misterstarshine

Replies: 4
Views: 10,844

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

Headphone amplifier for HiFiMAN HE-6

Started by jimvibe

Replies: 7
Views: 10,932

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

My QRV08 Build

Started by Houghtkj

Replies: 7
Views: 11,205

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

QRV-08 with 12V rails

Started by jezz

Replies: 11
Views: 11,608

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

QRV-08 Build Problems/Questions

Started by chinook9

Replies: 10
Views: 11,614

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

QRV-08 - ett fel och ett misstag

Started by maust

Replies: 13
Views: 11,774

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

QRV-04 failure

Started by savinalexandru

Replies: 8
Views: 12,143

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

QRV08 output voltage offset and the servo

Started by Kingston

Replies: 8
Views: 12,226

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

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

Started by peranders

Replies: 9
Views: 12,730

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

Power supply for QRV07

Started by renlute

Pages1 2

Replies: 16
Views: 14,161

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

QRV01 output stage

Started by goldkenn

Pages1 2

Replies: 19
Views: 15,457

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

QRV07 & QRV08 build costs

Started by nightanole

Replies: 14
Views: 16,350

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

QRV-08 gain reduction

Started by Discom

Replies: 3
Views: 16,996

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

QRV-02 support JIN

Started by peranders

Pages1 2

Replies: 21
Views: 17,810

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

QRV-08 power up

Started by svarthvitt

Pages1 2 3

Replies: 43
Views: 41,593

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

QRV-08 hum

Started by CapRock

Pages1 2 3 4 5

Replies: 63
Views: 50,404

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

QRV-08 Building and test

Started by galouche

Pages1 2 3 4 5

Replies: 71
Views: 59,354

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: 60,772

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