Phono RIAA amplifiers

QSXM2 - My realisation

Started by slimak

Replies: 1
Views: 6,849

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

Obsolete MAX420

Started by wopo

Replies: 2
Views: 7,121

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

QSXM3 build check

Started by goldkenn

Replies: 4
Views: 7,183

October 19, 2009, 07:51:43 PM
by goldkenn

QSXM2 - news and question

Started by fantast

Replies: 2
Views: 7,188

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

Question about QSXM2, regarding our email conversation

Started by goldkenn

Replies: 3
Views: 8,018

February 19, 2010, 01:22:34 PM
by peranders

QSXM2 - The Swiss Cheese

Started by DFM

Replies: 2
Views: 8,167

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

QSXM2: Start preparing!

Started by goldkenn

Replies: 6
Views: 8,615

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

QSXM2 Input Transistor Biasing

Started by MattB94

Replies: 0
Views: 8,725

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

QSXM2 - considering buying PCB, questions

Started by tk-don

Replies: 1
Views: 8,788

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

QSXM2: Greetings from Germany / Bulgaria!

Started by sinigersky

Replies: 5
Views: 8,955

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

QSXM2 balance output

Started by gianluca

Replies: 5
Views: 8,984

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

RIAA correction

Started by fantast

Replies: 1
Views: 9,021

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

QSXM2 build - TRANSISTORS ARE RED HOT!!!

Started by AAmer75

Replies: 1
Views: 9,248

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

Humming QSXM3

Started by VesaK

Replies: 2
Views: 9,249

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

SYMMETRICAL CARTRIDGE-CONNECTION

Started by roberto.missoli

Replies: 5
Views: 9,300

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

QSXM2, separate PSU ?

Started by Goofy

Replies: 3
Views: 9,319

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

I am confusing recently about transistor matching

Started by goldkenn

Replies: 1
Views: 9,375

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

QSXM2 current neccesary

Started by fantast

Replies: 2
Views: 9,419

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

QSXM2 questions.

Started by zz1969

Replies: 2
Views: 9,451

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

Correct load for MM

Started by zz1969

Replies: 2
Views: 9,544

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

QSXM2 doubt

Started by gianluca

Replies: 6
Views: 9,796

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

SSM version

Started by fantast

Replies: 2
Views: 9,801

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

QSXM3 FET

Started by Marcos

Replies: 1
Views: 9,864

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

EMI filter MuRATA 10nF/100V Max 6A

Started by gipione

Replies: 3
Views: 10,218

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

DYNAVECTOR 20XL Cartidge on QSXM2 RIAA amplifier

Started by AAmer75

Replies: 1
Views: 10,445

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

Cool QSXM3

Started by VesaK

Replies: 3
Views: 10,599

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

Critical transistors in QSXM2

Started by fantast

Replies: 5
Views: 11,399

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

QSXM3 Noise Floor Or Hum

Started by goldkenn

Replies: 9
Views: 11,695

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

Ribbon microphone

Started by roberto.missoli

Replies: 6
Views: 12,020

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

Replacement, Operational Amplifier DIL-8, MAX420EPA+

Started by zz1969

Replies: 5
Views: 12,323

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