Phono RIAA amplifiers

QSXM2 Input Transistor Biasing

Started by MattB94

Replies: 0
Views: 8,908

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

QSX03 A new RIAA amp with passive RIAA correction

Started by peranders

Pages1 2

Replies: 23
Views: 43,968

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

QSXM2 - My realisation

Started by slimak

Replies: 1
Views: 6,999

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

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 18,752

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

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 35,242

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

QSXM2 - news and question

Started by fantast

Replies: 2
Views: 7,379

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

QSXM3 with LTC1050 servo?

Started by Brambus

Replies: 6
Views: 15,952

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

QSXM2, separate PSU ?

Started by Goofy

Replies: 3
Views: 9,439

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

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 16,526

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

Cool QSXM3

Started by VesaK

Replies: 3
Views: 10,758

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

Serious imbalance with SSM Version

Started by Cel

Pages1 2

Replies: 25
Views: 25,475

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

Humming QSXM3

Started by VesaK

Replies: 2
Views: 9,366

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

QSXM2 - BOM questions, etc.

Started by tk-don

Replies: 8
Views: 13,487

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

Replacement, Operational Amplifier DIL-8, MAX420EPA+

Started by zz1969

Replies: 5
Views: 12,524

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

QSXM2 - considering buying PCB, questions

Started by tk-don

Replies: 1
Views: 8,935

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

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 46,940

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

RIAA correction

Started by fantast

Replies: 1
Views: 9,164

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

QSXM2 questions.

Started by zz1969

Replies: 2
Views: 9,587

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

Correct load for MM

Started by zz1969

Replies: 2
Views: 9,691

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

EMI filter MuRATA 10nF/100V Max 6A

Started by gipione

Replies: 3
Views: 10,355

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

SSM version

Started by fantast

Replies: 2
Views: 9,927

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

Transistor select for QSXM2

Started by horvlas

Replies: 6
Views: 13,914

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

Critical transistors in QSXM2

Started by fantast

Replies: 5
Views: 11,586

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

input bias servo with OP177FPZ

Started by fantast

Pages1 2

Replies: 16
Views: 21,859

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

QSXM2 current neccesary

Started by fantast

Replies: 2
Views: 9,548

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

Ribbon microphone

Started by roberto.missoli

Replies: 6
Views: 12,192

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

DYNAVECTOR 20XL Cartidge on QSXM2 RIAA amplifier

Started by AAmer75

Replies: 1
Views: 10,556

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

QSXM2 build - TRANSISTORS ARE RED HOT!!!

Started by AAmer75

Replies: 1
Views: 9,376

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

I am confusing recently about transistor matching

Started by goldkenn

Replies: 1
Views: 9,502

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

How To Change Gain For QSXM2 and QSXM3

Started by goldkenn

Replies: 6
Views: 12,552

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