Title imageTitle image




6669 Pinout
basing pinout


6669 Substitutes
Different rating or performance 6005, 6095, 6AQ5, 6AQ5A, 6AQ5W, 6BM5, 6L31, BPM04, CK6005, CV1862, CV3972, CV4019, CV5190, CV8229, EL90, M8245, N727

Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application.


6669 Ratings

No information available

6669 Application Data
Class Va Vg2 Vg1 Ia Ig2 Ra S Rk Zout Pout THD
A S/E 250 250 -12.5 45 4.5 52,000 4.1 250 5,000 4.5 8


6669 Data sheet links
Duncan''s Amp Pages 6V6, 6AQ5 etc.: Acrobat PDF (2 pages)
Peter Millett 6669: Acrobat PDF 97K  6AQ5-A: Acrobat PDF 119K
National Valve Museum 6AQ5: html2, html3, html4  EL90: html
oldradio.qrz.ru 6AQ5: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 6669: 6201.pdf (902849 bytes), 6669.pdf (127657 bytes), 6669.pdf (202284 bytes), 6669.pdf (400038 bytes)  6005: 6005.pdf (1208125 bytes) (fr), 6005.pdf (7327694 bytes) (fr)  6095: 6095.pdf (83154 bytes)  6AQ5: 6AQ5.pdf (211516 bytes), 6AQ5.pdf (400664 bytes) (fr), 6AQ5.pdf (49131 bytes), 6AQ5.pdf (608766 bytes)  6AQ5A: 6AM8A.pdf (264754 bytes), 6AQ5A.pdf (166697 bytes), 6AQ5A.pdf (526894 bytes)  6BM5: 6BM5.pdf (408583 bytes) (fr)  6L31: 6L31.pdf (349451 bytes) (cs)  EL90: EL90.pdf (189527 bytes) (de)  N727: N727.pdf (221150 bytes)
TubeZone 6AQ5: pdf

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details

All content on this page is copyright 1997-2022 Duncan Amplification. TTWWDIITWI

Version: PHP release 1.14 02-Nov-2019