bribrew1968

I had same issue. There is a twistable, silver casing surrounding the switch. Tighten this and all others. Hope this helps! :ph34r:

http://www.audioasylum.com/reviews/Tubes/Groove-Tubes/12AX7-M/tubes/172557.html Found this too. Still stunned by the quietness of this amp now (until I hit the strings LOL). Mullard tubes seem to be the name everyone likes though. I am impressed and just got a major education on pre amp tubes. My DT50 212 sounds like a symphony ... of destruction ... LOL.

DT50 212 --- amp went out on me after about 2 months, a quick gurgle as tubes burned out ... then nothing. Thusly, I looked at the tubes ... the EL's were glowing bright, 12AX7's were out. Went to Guitar Ctr and after being assured they'd work, I got the Groove Tube russian brand. I would avoid chinese brands also. Russian just seems better sounding to me. Easy to replace and took about 1 minute of careful pressure to install. Unplug too ... duh?! LOL. I immediately noticed that the factory 'hiss' was nearly gone (like 90%), and the sound was more colorful. I looked online and noticed the EH stock brand was much cheaper than the GT brand. As well, each topology was more defined. 3 and 4 are now my fav's. Wonder how the sound will be if I replace the EL's with a high quality brand? Bribrew

I have a handheld dB meter at home. Ya it was $60 but does the job. I sit away from amp, turn it up to a volume representing band rehearsal, then adjust volume to nearly the same levels. Also, set the foot-pedal to adjust the amp volume on HD500. IT can create an instant adjustment ... on the fly so to speak. The big mistake here is that sometime a little extra 'umph' is needed when playing leads ... use compression and or distortion levels to get yourself cut through the mix.

I never owned a Vetta either, but the DT50 212 is ungodly loud. The tube effect on my strat and LP is unmatched. Also, I have HD500 ... its the real deal. The learning curve is high as Zap said, but I find the tweaking fun. Go to a local Guitar Center and give it a good, 3 hour look. Also, spend time in the forums researching. All reviews are good, but look on youtube for hands on reviews where peeps are actually using it. I did all this and eventually made the jump ... haven't looked back since ...

Yes even a better answer. In a live situation ... heavy duty cables.

Zap is correct. As I understand there is more code in 1 HDxxx amp than there is in those model packs all put together.

I use an extension cable, as it likely cheaper method.

Agreed.

I had same issue. For me it wasn't Line 6, I had failed to update drivers for UNO midi interface. Once I went to their website, obtained Win7 drivers, it was a snap. Be sure all drivers are loaded for all devices being used. Reboot all, then try again.

http://www.uberproaudio.com/who-plays-what/105-joe-satriani-guitar-gear-rig-and-equipment There is much in the list from link above that is part of the HD500. Id say go with the Marshall 6100 head (JCM 800??) and boss effects listed. Hope this helps ...

maybe turn off cabs and use just the head or pre-amps. Experiment around ... there are no rules ... let us know how it works out. There is a LINE and AMP switch you can mess with too. Its near the PAD/NORMAL switch.

I had horrible humming from my DT50 212. Turned out to be the power strip. Changed to another wall outlet and it was fixed. In standby I never had the issue. Hopefully they can fix your amp ... these are sweet amps .... best of luck!

http://line6.com/support/topic/202-cd-input-work-with-hd500-and-dt50-212/ Similar question answered a few posts down ... Essentially, it would not sound very good due to rerouting of internal circuitry and valves with each patch. Sound would constantly change.

Wow ... L6 is the most friendly company for musical stuff I've ever used. GTFO really? Chalk one up for no credibility on that post.

Also, when not using DT amps as your output you will need to change the output setting in the I/O options on HD500 back to non external amp settings. I took HD500 to a jam session, plugged into the PA and almost got laughed out of the jam. It sounded horrible. I checked and sure enough the HD500 was still on combo power amp from the L6 link I had from using my DT50 212. Once I switched it ... the sound blew the doors off of their $50 Crate amps. Nice ...

Both answers are legit. Basically, with the DT amps some HDxxx features are not so usable Certainly, this is not a complaint. These items sound amazing ... I was just tinkering and was curious.

Can the CD input on HD500 be used to play along with track while using L6 connection from HD500 to DT50 212? How about the mic input on HD500 as well? I would like advice before trying it. Thanks folks!! :wacko: Bribrew1968 Line 6 fan since 2006

I've been reading about the volume issues with the DT50 212. Too loud, etc. Before I say anything else its the real deal amp. I'm blown away with the HD500 integration. The Solo models are to die for!!!! Here's what I do to deal with volume issues: Each amps output can be set to the expression pedal without using DSP. Watch for how to do this. I've taken my amps/tones and used this technique to lower the overall volume (around a maximum value of 50-60) while keeping the master volume on the high power position (pushed in). Keep the master at about 12 o'clock (or what you like) and use the output settings to level each amp (patch) to each other and to lessen the output. This can be done with dual tones as well, just set both amps to similar parameters, and same expression pedal. Do you lose sound? At 50-60 ... no on most amp models. Some amp models lose slightly, but low volume is merely, usually practice. Is this the perfect fix? Probably not. However, your amp/patches will be leveled, properly loud, and get full use of channel volume and master volume mixes. When playing live a quick touch on the master can work wonders. Let me know how this works out if you try it. His advice (see link above) for wah pedals is spot on too. If its too loud ... move! LOL Happy jamming! bribrew1968