Phono RIAA amplifiers

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 4,505

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

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 12,873

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

QSXM2 - news and question

Started by fantast

Replies: 2
Views: 1,167

November 08, 2020, 11:40:35 AM
by fantast

QSXM3 with LTC1050 servo?

Started by Brambus

Replies: 6
Views: 8,209

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

QSXM2, separate PSU ?

Started by Goofy

Replies: 3
Views: 3,381

November 05, 2017, 05:39:35 PM
by peranders

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 7,630

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

Cool QSXM3

Started by VesaK

Replies: 3
Views: 4,848

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

QSX03 A new RIAA amp with passive RIAA correction

Started by peranders

Pages1 2

Replies: 22
Views: 27,395

March 16, 2015, 04:25:25 PM
by peranders

Serious imbalance with SSM Version

Started by Cel

Pages1 2

Replies: 25
Views: 11,422

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

Humming QSXM3

Started by VesaK

Replies: 2
Views: 3,842

December 20, 2014, 06:19:16 PM
by VesaK

QSXM2 - BOM questions, etc.

Started by tk-don

Replies: 8
Views: 6,476

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

Replacement, Operational Amplifier DIL-8, MAX420EPA+

Started by zz1969

Replies: 5
Views: 6,228

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

QSXM2 - considering buying PCB, questions

Started by tk-don

Replies: 1
Views: 3,656

January 21, 2014, 09:07:10 PM
by peranders

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 21,692

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

RIAA correction

Started by fantast

Replies: 1
Views: 3,709

October 13, 2013, 10:08:30 PM
by peranders

QSXM2 questions.

Started by zz1969

Replies: 2
Views: 4,114

October 08, 2013, 08:30:13 PM
by fantast

Correct load for MM

Started by zz1969

Replies: 2
Views: 4,137

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

EMI filter MuRATA 10nF/100V Max 6A

Started by gipione

Replies: 3
Views: 4,371

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

SSM version

Started by fantast

Replies: 2
Views: 4,413

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

Transistor select for QSXM2

Started by horvlas

Replies: 6
Views: 6,642

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

Critical transistors in QSXM2

Started by fantast

Replies: 5
Views: 5,400

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

input bias servo with OP177FPZ

Started by fantast

Pages1 2

Replies: 16
Views: 9,721

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

QSXM2 current neccesary

Started by fantast

Replies: 2
Views: 4,051

December 22, 2011, 08:30:48 PM
by fantast

Ribbon microphone

Started by roberto.missoli

Replies: 6
Views: 5,790

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

DYNAVECTOR 20XL Cartidge on QSXM2 RIAA amplifier

Started by AAmer75

Replies: 1
Views: 5,402

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

QSXM2 build - TRANSISTORS ARE RED HOT!!!

Started by AAmer75

Replies: 1
Views: 4,069

September 13, 2011, 10:02:48 PM
by peranders

I am confusing recently about transistor matching

Started by goldkenn

Replies: 1
Views: 4,118

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

How To Change Gain For QSXM2 and QSXM3

Started by goldkenn

Replies: 6
Views: 6,032

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

QSXM3 Noise Floor Or Hum

Started by goldkenn

Replies: 9
Views: 6,908

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

newbie in QSXM2 , just received PCB

Started by Edmund Chan

Pages1 2

Replies: 15
Views: 11,117

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