Serious Studio Bang for Not-so-serious Buck! Despite the increasing popularity of powered speakers, many speakers and headphones still require external amplification. The RA150 is designed to provide more power and better performance, at a lower overall cost per watt than the earlier RA100. As a result, it can more closely match the power needs of virtually any passive speaker or studio monitor, and provides a crisp, clean signal for outstanding performance and extended speaker life. Designed for studio use, the RA150 amp incorporates advanced convection cooling for heat dissipation. The result is long, stable operation unaffected by heat-related complications, and without the added distraction and annoyance of fan cooling. This eliminates the frustration of trying to hear quieter details due to noisy amp performance. FeaturesAffordable power amp for project and commercial recording studios, broadcast and post-production control roomsCool, quiet operation (no fan)SpecificationsPower Rating Stereo @ 4 ohms: 75 watts per channel RMSStereo @ 8 ohms: 45 watts per channel RMSBridged @ 8 ohms: 150 watts RMSDamping Factor: 200Input Sensitivity: +4dB for rated outputInput Impedance: 10k ohm/20k ohm (unbalanced/balanced)Gain: Not specified by manufacturerFrequency Response: 10Hz to 70kHzSignal-to-Noise Ratio: >105dBTotal Harmonic Distortion (THD): Not specified by manufacturerInput Connections: 2 x 1/4" TRS, 2 x RCA coaxialOutput Connectors: 2 x Pair binding postsControls Front Panel 2 x Rotary controls for gainPower switchControls (Rear): Stereo/bridged mono switchIndicators: 1 x Clip/protect LED, 1 x Power LED per channelCooling: ConvectionPower Consumption: Not specified by manufacturerDimensions: 19" x 10 1/4" x 3 15/16"Weight: 15 lbsSpecialties: Powerful performance at an affordable price