Spirit AMP Specifications

* Type: Class A biased with buffer
* SNR: >100dB
* THD: <0.005% (1mW into 300 ohm)
* Gain: 0dB (unity) or 15dB (high)
* Output Current: 50mA
* Output Impedance: <2ohm
* Output DC Offset: <2mV (headphone safe)
* Capacitors: 2x Wima and 2200uF Blackgate
* PCB / Assembly: 4 layer FR4, Cardas solder
* Jacks: 2x 3.5mm stereo mini (10k life)
* Battery Type: 9V Alkaline/NiMH/Lithium
* Battery Life: 30 hours (Alkaline only)
* Desktop Adaptor: >5V and <16V, 5.5mm/2.5mm DC
* Chassis: 3.15" x 2.125" x 0.91" anodized aluminium
* Weight: 5.3ounce / 150g

Handcrafted in the USA
Unlike the cost driven electronics industry, we cherry pick our parts and assemble the amplifiers by hand in the United States. We use premium components and even hand match the Class A JFETs found in our amplifers. Designing/building headphone amplifiers is our passion and the Spirit AMP is a culmination of months of tweaking and listening. We are confident you will be enthralled by its sonic signature. Advanced audio enthusiasts may also swap out the input opamp and discrete JFETs (not covered under warranty). Specifications of the swapable components may be found in the user guide.