Hey Dannyz can u do some clips with your booster and rubys tubes? i have a marshall SL-5 and i changed preamp tubes with 2 TAD and 1 electro harmonix, i use a Boss ge-7 as booster always on. Like you, i love #34, i wanted to change the EL34 with a 6550 but we have same problems, i have to buy oneDannyz wrote:Hey bmwfreq! what are your thougths about the TungSol 6550 current production?
My amp is a Marshall SL-5, the amps tophology is not that far from the JCM 800 84´...actually it has the same preamp with the correct values. To avoid the modification to #34 specs (maybe one day i´ll modify the amp) im using as an "always on" booster a Whiteface Proco Rat tweaked in its high pass/low pass filter for a parked wah wah effect like Slash´s #34 tone. Its almost spot on, even my settings are almost the same as Saul´s (Treble 0 - Mid 3,5 - Bass 8 - Pres 0...Gain is a little diferent, ive got it at 4,5 and volume to taste, most time at 4,3).
The amp has an El34b made by Shuguang tubes, if i push the master volume to 6 or 8 the amps tone become too bassy and ruins the almost identical #34 tone that i got using my unorthodox gear. Im using the onboard Celestion Vintage 30 that came into the SL-5.
If you can, go into incredibly descriptive details (Jump Street 22 dixit lol) about the Tungsol 6550, here in my country that single tube (not even a quad) cost about U$S 80...i know the best way is tryin´ by myself but i would like to hear your opinion. By the way your #34 clip is awesome! GREAT job.

Generally i have treble 4 - mid 5,5 - bass 7 - pres 3-4, so i'm curious to hear the sound of your marshall
