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.
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.
Headphone & Speaker Amplifier
Direct drive amplifier for True-Ribbon Earfield Monitor headphones, speakers, conventional dynamic, and planar magnetic headphones.
Unbalanced, Single-Ended RCA. True-Balanced, XLR.
24 Step Attenuator.
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|
|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)|
|Optional:||Waterproof Flight Case w/Handle & Casters $350 USD|
|Selectable Mains Volatge:||115/230V (100V available for Japan)|
99.9% of orders placed before 4pm EDT go out the same day. We ship USPS and UPS. Everything we sell has a free shipping option available other than accessories under $50 and international shipping for the few products we sell outside the US.
For items under $300, free shipping takes 2-4 business days. For items over $300, free priority shipping takes 1-3 business days. For items over $1000, we pretty much always will get it to you within business 2 days. Signature is required upon delivery. We also offer a variety of expedited shipping options.
Tracking info is provided via email as soon as we ship.