For specs see link compltes manufacturer (http://www.swrsound.com/products/view_specs.php?full_partno=4400300000&name=SM% 2B500% 3B & trade)

Prampli 12AX7, power amp transistors
Power: 500W @ 4ohms Mono / Stereo 250W @ 4ohms
Connectors: Output jack and Speakon, XLR, effects loop, all mono and Stereo, tuner out, 2 instrument inputs (active / passive)
Rgalges: Gain, Limiter, Aural Enhancer, Bass, Equalizer semi Settings, Treble / Transparency, Effect Blend (mono and Stereo), Vol.
2U. 2 latrales grips for easy handling.
Not at all heavy or bulky.

UTILIZATION

Trs simple configuration. ISSA connections. The rear face is provided as well as the front, but everything is clear, whether in Bi-amp or Stereo Bridge mono. The possibilities are connectivity standards.
Is obtained easily and recess excellent sound quality that many dpend between the instrument. This amp is trs Fidler and scrupulously respects the timbre of an instrument.
Manual (PDF) (http://www.swrsound.com/support/manuals/pdfs/SM500_OM.pdf) is in English. Clear to anyone who reads English ... but overall not rocket science.

SOUNDS

Everything is playable with this amp. It should particulirement to modern music (funk, metal). I use it to play in a style pop rock (Muse / Radiohead) and metal (Meshuggah / Freak kitchen) where I need to have a terrific sound Dfine particularly severe in order to properly highlight the mix.
I play mostly on a Vigier Passion and IV Ibanez BTB406QL (therefore a serious SI), with a pregnant EDEN 410XLT.
The sound is crystalline and prcis. Two words to his résumé would be the "transparency" and "fidlitquot;.
Whatever the rglages, the sound is very hyper and I like Dfine lot recess is trs important for me to have a sound cohrent across the spectrum. The CONTRL are fine and powerful time. We add the bass and the sound is more serious but not more deaf, we add the treble and the sound is more crystalline, but not aggressive. The graph shows qualiseur standards of sonic possibilities and allows to control the sound REALLY. This amp does not add that little color trs sound, which can stepfather a default for some people but for me it is his greatest quality. Global Warming Lamp altrer without sound. It has a light grain associated attack prcise frank and transistors, and this volume DSIR.
To have a well also has the roots, but it takes a little fiddling rgalges (boost / cut on good frquences) to get the right mix. In fact it is the instrument which determines the most from the sound output, which I think is one of the best philosophies when it comes to amplify an instrument.

OVERALL OPINION

I use it for 1 year.
What I like most is the Aural Enhancer: this allows to reduce the frquences of rsonnance and get clarity and DEFINITIONS copies, and on any given volume (in the operating conditions of the unit, recess). J'apprcie also respects the fact that the timbre of the instruments in that branch, but their level indniable adding more sound.
What I like least: nothing ... there is nothing cast in this amp!
Report quality price: a price and the quality is not given. But it was worth the money. Nothing to do with the preset "Studio tone" of a Pod XT Pro ... (I speak knowingly, I sold mine a while ago)
Of course I would do this choice: I'm super happy with this amp!
For more information, see the link builder (http://www.swrsound.com/products/search.php?partno=4400300000).