Phono RIAA amplifiers

Cool QSXM3

Started by VesaK

Replies: 3
Views: 9,250

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

Correct load for MM

Started by zz1969

Replies: 2
Views: 8,287

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

Critical transistors in QSXM2

Started by fantast

Replies: 5
Views: 9,817

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

DYNAVECTOR 20XL Cartidge on QSXM2 RIAA amplifier

Started by AAmer75

Replies: 1
Views: 9,301

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

EMI filter MuRATA 10nF/100V Max 6A

Started by gipione

Replies: 3
Views: 8,889

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

How To Change Gain For QSXM2 and QSXM3

Started by goldkenn

Replies: 6
Views: 10,824

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

Humming QSXM3

Started by VesaK

Replies: 2
Views: 8,045

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

I am confusing recently about transistor matching

Started by goldkenn

Replies: 1
Views: 8,248

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

input bias servo with OP177FPZ

Started by fantast

Pages1 2

Replies: 16
Views: 17,892

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

newbie in QSXM2 , just received PCB

Started by Edmund Chan

Pages1 2

Replies: 15
Views: 16,710

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

Obsolete MAX420

Started by wopo

Replies: 2
Views: 6,861

October 18, 2009, 03:12:56 PM
by goldkenn

QSX03 A new RIAA amp with passive RIAA correction

Started by peranders

Pages1 2

Replies: 23
Views: 38,605

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

QSXM2 - BOM questions, etc.

Started by tk-don

Replies: 8
Views: 11,399

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

QSXM2 - considering buying PCB, questions

Started by tk-don

Replies: 1
Views: 7,674

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

QSXM2 - My realisation

Started by slimak

Replies: 1
Views: 5,563

June 26, 2022, 04:29:44 PM
by slimak

QSXM2 - news and question

Started by fantast

Replies: 2
Views: 5,761

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

QSXM2 - The Swiss Cheese

Started by DFM

Replies: 2
Views: 7,882

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

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 13,870

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

QSXM2 balance output

Started by gianluca

Replies: 5
Views: 8,651

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

QSXM2 build - TRANSISTORS ARE RED HOT!!!

Started by AAmer75

Replies: 1
Views: 8,091

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

QSXM2 current neccesary

Started by fantast

Replies: 2
Views: 8,149

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

QSXM2 doubt

Started by gianluca

Replies: 6
Views: 9,487

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

QSXM2 Input Transistor Biasing

Started by MattB94

Replies: 0
Views: 6,908

October 05, 2023, 02:51:41 AM
by MattB94

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 27,224

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

QSXM2 questions.

Started by zz1969

Replies: 2
Views: 8,240

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

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 13,667

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

QSXM2, separate PSU ?

Started by Goofy

Replies: 3
Views: 8,029

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

QSXM2: Greetings from Germany / Bulgaria!

Started by sinigersky

Replies: 5
Views: 8,617

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

QSXM2: Start preparing!

Started by goldkenn

Replies: 6
Views: 8,284

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

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 37,556

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