The HSA-1b by RAAL-requisite is the world’s first switch drive amplifier for their world renowned Earfield™ headphone monitor. Built to direct drive the SR1a and switch to power conventional headphones or spekaers. Offering both unbalanced single-ended RCA and True-Balanced XLR input alongside a rock-solid precision 24-step attenuator for balance at all listening levels.
True Ribbon™ SR1a. The world's first Earfield™ headphone monitor now with OEM Switch Drive Amplification available!
• HSA-1b
• SR1a + HSA-1B / Roller Carry On Case
• SR1a + HSA-1B / Interface Box / Roller Carry On Case
All with a 5 year Manufactor Warranty
• Inputs: IN1 - RCA pair, IN2 - XLR pair
• Speaker Drive: 8 ohm, 4 ohm, 2 ohm Loads
• Dimensions: (H) 3.54" x (W) 8.58" x (D) 12.6"
• Weight: 11.7 lbs
• Ribbon & Headphones Drive: RAAL-requisite SR-1a, Dynamic &Planar Magnetic
• Load Impedance: .03 ohm - infinity
• Output Power (one channel driven): 10W/8 ohms, 20W/4 ohms, 40W/2 ohms, 55W/1 ohm @ 1khz/sine
• Freq Response: 100mv/ in/sin 15hz-500kHz
• Power Bandwidth: 100kHz (-3dB) at 1khz
• Frequency Range:30Hz - 30KHz
• Signal to Noise Ratio: < 90dB
• Input Impedance: 40 kOhm
• Sensitivity: < 0,5V/40kOhm
• Max Power Consumption: 150W, without signal 25W