Here's my review: https://www.audioasylum.com/reviews/Amplifier-Tube/Halo-Audio/SPM-40/tubes/120273.html
And here's another:
http://www.audioreview.com/product/amplification/amplifiers/antique-sound-lab/mg-spm40-single-end-power-amplifier.html
No reasonable offers refused. have been alerted that forum email isn't working right so here are two addresses to contact me. Jackeravanjr@gmail(dot)com jacktakenoslack@charter(dot)net
Payment and Shipping
Pay By:
Personal Check after it clears, Paypal, Money Order/Certified Check
