Phono RIAA amplifiers

Transistor select for QSXM2

Started by horvlas

Replies: 6
Views: 10,817

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

SYMMETRICAL CARTRIDGE-CONNECTION

Started by roberto.missoli

Replies: 5
Views: 8,565

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

SSM version

Started by fantast

Replies: 2
Views: 7,828

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

Serious imbalance with SSM Version

Started by Cel

Pages1 2

Replies: 25
Views: 18,306

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

Ribbon microphone

Started by roberto.missoli

Replies: 6
Views: 9,329

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

RIAA correction

Started by fantast

Replies: 1
Views: 7,239

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

Replacement, Operational Amplifier DIL-8, MAX420EPA+

Started by zz1969

Replies: 5
Views: 9,905

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

Question about QSXM2, regarding our email conversation

Started by goldkenn

Replies: 3
Views: 7,441

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

QSXM3 with LTC1050 servo?

Started by Brambus

Replies: 6
Views: 13,213

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

QSXM3 Noise Floor Or Hum

Started by goldkenn

Replies: 9
Views: 10,720

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

QSXM3 hum problems

Started by peranders

Pages1 2

Replies: 18
Views: 17,679

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

QSXM3 FET

Started by Marcos

Replies: 1
Views: 8,417

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

QSXM3 build check

Started by goldkenn

Replies: 4
Views: 6,550

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

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 33,296

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

QSXM2: Start preparing!

Started by goldkenn

Replies: 6
Views: 7,948

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

QSXM2: Greetings from Germany / Bulgaria!

Started by sinigersky

Replies: 5
Views: 8,308

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

QSXM2, separate PSU ?

Started by Goofy

Replies: 3
Views: 7,107

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

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 11,401

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

QSXM2 questions.

Started by zz1969

Replies: 2
Views: 7,453

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

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 23,410

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

QSXM2 Input Transistor Biasing

Started by MattB94

Replies: 0
Views: 4,795

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

QSXM2 doubt

Started by gianluca

Replies: 6
Views: 9,113

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

QSXM2 current neccesary

Started by fantast

Replies: 2
Views: 7,420

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

QSXM2 build - TRANSISTORS ARE RED HOT!!!

Started by AAmer75

Replies: 1
Views: 7,389

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

QSXM2 balance output

Started by gianluca

Replies: 5
Views: 8,335

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

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 12,537

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

QSXM2 - The Swiss Cheese

Started by DFM

Replies: 2
Views: 7,628

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

QSXM2 - news and question

Started by fantast

Replies: 2
Views: 4,835

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

QSXM2 - My realisation

Started by slimak

Replies: 1
Views: 4,676

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

QSXM2 - considering buying PCB, questions

Started by tk-don

Replies: 1
Views: 7,011

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