Phono RIAA amplifiers

QSX03 A new RIAA amp with passive RIAA correction

Started by peranders

Pages1 2

Replies: 23
Views: 36,581

March 04, 2023, 09:05:31 AM
by goldkenn

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 34,442

November 02, 2013, 07:41:46 PM
by peranders

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 24,403

January 30, 2021, 11:15:40 AM
by peranders

Serious imbalance with SSM Version

Started by Cel

Pages1 2

Replies: 25
Views: 18,845

December 31, 2014, 09:07:17 AM
by peranders

QSXM3 hum problems

Started by peranders

Pages1 2

Replies: 18
Views: 17,799

April 11, 2006, 11:58:37 AM
by peranders

input bias servo with OP177FPZ

Started by fantast

Pages1 2

Replies: 16
Views: 16,506

December 31, 2011, 07:21:52 PM
by peranders

newbie in QSXM2 , just received PCB

Started by Edmund Chan

Pages1 2

Replies: 15
Views: 16,221

June 22, 2010, 02:29:02 PM
by Edmund Chan

QSXM3 with LTC1050 servo?

Started by Brambus

Replies: 6
Views: 13,557

January 21, 2018, 12:03:46 PM
by Nugman

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 12,847

June 08, 2015, 09:36:21 PM
by tk-don

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 11,915

February 13, 2021, 01:57:44 AM
by W1DAN

Transistor select for QSXM2

Started by horvlas

Replies: 6
Views: 11,089

August 09, 2012, 06:36:17 PM
by peranders

QSXM3 Noise Floor Or Hum

Started by goldkenn

Replies: 9
Views: 10,888

August 18, 2010, 12:55:04 PM
by goldkenn

QSXM2 - BOM questions, etc.

Started by tk-don

Replies: 8
Views: 10,641

March 02, 2014, 08:40:54 AM
by peranders

How To Change Gain For QSXM2 and QSXM3

Started by goldkenn

Replies: 6
Views: 10,161

March 07, 2011, 06:22:26 AM
by peranders

Replacement, Operational Amplifier DIL-8, MAX420EPA+

Started by zz1969

Replies: 5
Views: 10,132

February 05, 2014, 10:39:03 PM
by peranders

Ribbon microphone

Started by roberto.missoli

Replies: 6
Views: 9,584

November 14, 2011, 09:59:26 PM
by peranders

QSXM2 doubt

Started by gianluca

Replies: 6
Views: 9,200

October 28, 2009, 11:28:10 AM
by peranders

Critical transistors in QSXM2

Started by fantast

Replies: 5
Views: 9,157

January 08, 2012, 08:52:25 PM
by fantast

DYNAVECTOR 20XL Cartidge on QSXM2 RIAA amplifier

Started by AAmer75

Replies: 1
Views: 8,771

September 14, 2011, 06:22:52 PM
by peranders

SYMMETRICAL CARTRIDGE-CONNECTION

Started by roberto.missoli

Replies: 5
Views: 8,646

December 13, 2008, 08:59:06 PM
by peranders

Cool QSXM3

Started by VesaK

Replies: 3
Views: 8,639

March 16, 2015, 04:26:43 PM
by peranders

QSXM3 FET

Started by Marcos

Replies: 1
Views: 8,488

August 06, 2005, 10:23:18 AM
by peranders

QSXM2 balance output

Started by gianluca

Replies: 5
Views: 8,388

September 03, 2007, 07:07:32 PM
by peranders

QSXM2: Greetings from Germany / Bulgaria!

Started by sinigersky

Replies: 5
Views: 8,379

April 16, 2007, 06:55:52 AM
by peranders

EMI filter MuRATA 10nF/100V Max 6A

Started by gipione

Replies: 3
Views: 8,328

March 16, 2013, 07:42:14 AM
by peranders

SSM version

Started by fantast

Replies: 2
Views: 8,018

November 13, 2012, 07:37:28 PM
by fantast

QSXM2: Start preparing!

Started by goldkenn

Replies: 6
Views: 8,012

October 25, 2009, 04:31:13 PM
by goldkenn

Correct load for MM

Started by zz1969

Replies: 2
Views: 7,731

March 22, 2013, 12:48:21 PM
by zz1969

I am confusing recently about transistor matching

Started by goldkenn

Replies: 1
Views: 7,714

March 11, 2011, 10:51:57 AM
by peranders

QSXM2 - The Swiss Cheese

Started by DFM

Replies: 2
Views: 7,684

February 17, 2007, 05:40:37 PM
by DFM