Compyfox wrote:Just one Q:
Is it normal that this amp produces feedback loops really quick?
I had a demo loop from Steinberg's media bay in use yesterday, and I got constant noise artifacts and feedback. Could be due to the heavily gated content of the loop. But Emissary sure is a more heavy weight beast than your other amp heads.
I'm also a bit irritated about the back panel knobs. I thought I could switch the voltage to maybe introduce a different type of hum, or use the Mix and Boost knob.
A bit more info on the tubes would have been nice as well. Non-guitar tech heads might be overwhelmed with the numeric descriptions. A common issue with all kinds of guitar emulations these days.
Sorry for the late reply!
Regarding feedback, this is probably due to the very high amount of gain the Emissary has on the lead channel.
About the disabled controls on the rear panel, sorry for the confusion, but as I've explained on the first page of this thread, they're there to show all the features of the real amplifier.
The Mix control is related to the amplifier effect loop (send / return). A generic Dry / Wet mix control for the whole circuit has never been implemented in guitar amplifiers as far as I remember (I've seen it in bass amplifiers, though), so I've never seen the point of implementing it on a guitar plug-in (some DAWs implement that kind of control by default on any loaded plug-ins)
The Boost (which is a volume boost for solos, on the real amp) is disabled because in a DAW context you can simply automate the Master volume or the Output volume to get the same effect.
Regarding tubes, you're right, but as a lot of other tools used in the guitar / bass world, it is not so simple to describe the sound of a tube (triode, pentode or tetrode or whatever), mostly because it depends on the circuit around it.
Power amp tubes, having relatively little voltage gain, don't even have considerable Miller capacitances, so frequency-response wise, they can be considered flat. What changes is the headroom and the saturation curve, but again, it is very hard and subjective to describe saturation and it all depends on the bias settings.
Generally, 6L6s and KT88s are considered to be "modern" sounding, with a tighter tone and preferred by metal guitarists. EL34s are more suited for "british" rock/hard rock sounds, mostly because they've been used in Marshall amps (6L6s by Mesa Boogie, Peavey and Soldano, instead).
Hope it is a little more clear for not-guitarists