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Our Take
If you love the SR1a, but want more of the incredible soundstage and vivid imaging, and more of the neutral, realistic delivery, the HSA-1b gives you just that.
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The HSA-1b is a the perfect pair for the RAAL-requisite SR1a, but it can also be used to drive speakers and a wide variety of other headphones.
Direct drive amplifier for True-Ribbon Earfield Monitor headphones, speakers, conventional dynamic, and planar magnetic headphones.
Unbalanced, Single-Ended RCA. True-Balanced, XLR.
Precision 24-step attenuator for rock-solid left/right balance at all listening levels.
Load Impedance: | 0.3 Ohm – infinity |
Output Power (one chanel driven): | 10W /8Ω, 20W/4Ω, 40W/2Ω, 55W/1Ω @ 1khz/sine |
Ribbon & Headphones Drive: | RAAL-requisite SR-1a, Dynamic & Planar Magnetic |
Speaker Drive: | 8Ω, 4Ω, & 2Ω Loads |
Freq. Response: | 100mv/ in/sin. 15hz – 500kHz |
Power Bandwidth: | 100kHz (-3db) at 1khz |
Distortion: | < 0,5% at 1khz |
Signal to Noise Ratio: | Better than 90dB |
Input Impedance: | 40 kOhm |
Sensitivity: | 0,5V /40kOhm |
Input: | IN1- 2 RCA, IN2 – 2 XLR |
Max Power Consumption: | 150W , without signal 25W |
Dimensions: | H 90, W 218, D 320mm (3.54 x 8.58 x 12.60 inches) |
Weight: | 5,3kg (11.68 pounds) |
Price: | $4,500 USD |
Optional: | Waterproof Flight Case w/Handle & Casters $350 USD |
Selectable Mains Volatge: | 115/230V (100V available for Japan) |