JJ ECC803s / Hi-Performance 12AX7 Preamp Vacuum Tube
The JJ ECC803s is a hi-performance 12AX7 that has a spiral wound filament to reduce noise and hum. The construction is different from the JJ ECC83 in that the plates are more conventional, but have a special heat dissipating fin that serves to improve efficiency and gain. The plates of the tube are also "over-sized" (longer) as compared to most standard 12AX7 tubes. This over sized plate structure improves details in the bass and low mid-range responses. If you want that great JJ tone in a hi-performance package, then these are for you.
I was given a brand new hand made Marshall amp so I could install a PPIMV . Now when dimed, there was a LOT of tube hum from the front end. After doing a spectrum analysis, the dimed hum was -16dB ( stupid loud for hum ). When I replaced stock Marshall V1 and V2 tubes with Low noise 803S JJ's, the hum dropped to -44dB !! Spectrum Analysis showed that the JJ's distortion was identical to stock, with more bottom. Happy Customer. JJ's ROCK !!
reviewed by: The Ampdoctor
My go to tube for my JCM-2000 TSL-100 and my JVM-205c. To me, this is the best for Marshalls. Nice with high gain without being harsh. These really smooth out the overall sound of Marshalls. If you have a Marshall, you need to give these a try.
reviewed by: Tim
A good tube for upgrading the stock 12ax7 of my integrated amplifier.
reviewed by: Adrian
Perfect replacement for an old Crate 5 watt amp. No micro-phonics at all. Very crisp and clean sounding preamp tube.
reviewed by: Buckwheat
Great phase inverter tube for Mesa Recs esp for the Triple. My Sons Band mates liked them.
reviewed by: Drew
Great tube works as advertised not noisey or microphonic. I just put all new tubes in my 68 Fender Pro Reverb, with all the other tubes and solid state rectifier, the Pro has never sounded better.
reviewed by: David
Great Sound and very low noise
reviewed by: Nott
Great sounding tube large sound stage great for marshall
reviewed by: Richard F
I love these tubes. Smooth, plenty of gain and eh high end is sweet and never piercing.
reviewed by: Brian
Love these. Gets the job done.
reviewed by: Chad
I put 4 of these tubes in my Dumble clone and it sounds as good as the NOS GE 12AX7A/7025 tubes IMO!!!
reviewed by: Matt
Great tube, works as it should
reviewed by: Andrew
Sound very good!!!
reviewed by: Sébastien Gilbert
Great Sounding tube! Sound Like A JJ but has tighter lows!
reviewed by: James