Phono RIAA amplifiers

QSXM3 Noise Floor Or Hum

Started by goldkenn

Replies: 9
Views: 11,328

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

QSXM2 - BOM questions, etc.

Started by tk-don

Replies: 8
Views: 11,758

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

Transistor select for QSXM2

Started by horvlas

Replies: 6
Views: 12,203

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

QSXM2 - various debugging

Started by tk-don

Replies: 13
Views: 14,335

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

QSXM2 troubleshooting!!

Started by W1DAN

Pages1 2

Replies: 16
Views: 14,529

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

QSXM3 with LTC1050 servo?

Started by Brambus

Replies: 6
Views: 14,583

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

newbie in QSXM2 , just received PCB

Started by Edmund Chan

Pages1 2

Replies: 15
Views: 16,843

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

QSXM3 hum problems

Started by peranders

Pages1 2

Replies: 18
Views: 18,440

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

input bias servo with OP177FPZ

Started by fantast

Pages1 2

Replies: 16
Views: 18,606

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

Serious imbalance with SSM Version

Started by Cel

Pages1 2

Replies: 25
Views: 21,448

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

QSXM2 problem

Started by zayance

Pages1 2 3

Replies: 39
Views: 28,625

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

qsxm3

Started by yiancar

Pages1 2 3 4

Replies: 55
Views: 39,177

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

QSX03 A new RIAA amp with passive RIAA correction

Started by peranders

Pages1 2

Replies: 23
Views: 39,592

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