FS: ART SLA 1 one space poweramp.
 

FS: ART SLA 1 one space poweramp.
Very good condition, works perfectly.
$75 shipped within the continual U.S.

What're the specs? Features? How many watts per channel? What ohm loads?

Sorry about that. Here is the link to the manual:
http://artproaudio.com/files/owners_manuals/om_sla1.pdf

From the manual:
• Studio Linear Amplifier
• Extremely Low Noise, Discrete Linear Design
• 100 Watts/Channel @ 8 Ohms
• 260 Watts/Bridged Mono @ 8 Ohms
• Toroidal Transformer
• 10 Hz to 40 kHz within 1dB
• XLR & 1⁄4” Inputs • Ground Lift Switch
• Silent, Thermal Dependent Cooling System
• Multi-Way Binding Post Outputs
• Low Profile 1U Rackmountable Design
• All Steel and Aluminum Chassis
• Perfect for Pro and Project Studios