Ampersand Ampersand ("Ampers+And") is a portable, balanced, all-analogue headphone amplifier, custom-tuned to drive your headphones to their fullest potential. Ampersand sets a new standard in high power, at lowest distortion. Watch your entire headphone collection come alive - the Balanced, Portable Reference Headphone Amplifier will deliver. Enjoy consistent audio quality whether you use Balanced Armature, Dynamic or Planar Magnetic headphones.  Features Balanced and single-ended inputs featuring standard 3.5 mm and 4.4 mm balanced input jacks, making it easy to connect any DAC or DAP as analog input source. Balanced and single-ended outputs, featuring standard 3.5 mm and fully balanced, 4.4 mm and XLR jacks, for connecting a variety of headphone models. Up to 3W of clean power per channel, to enjoy consistent audio quality with Planar Magnetic headphones. Also supports Balanced Armature and Dynamic headphones. Control the volume with the on-board volume knob, which feels great thanks to the internal hydraulic pressure absorbing system, for a smooth, satisfying adjustment. Use the 3-position gain switch for compatibility with the widest range of headphone sensitivities. Flip the Fix/Var switch and control and volume from your DAP or DAC. Calibrated LED VU meters with a string of white LEDs, topped with red "overload" LEDs, let you can monitor input levels. Brightness is adjustable from "off" to daylight-visible. Rechargeable Lithium-Polymer battery, which delivers over 8 hours of playback on a single charge, and a USB-C port for power and charging. This fully analogue product will likely outlive many DACs and DAPs. Analogue technology is built-to-last, and doesn't date like digital tech, so rest assured — your investment is protected. Ampersand stacks well with the CEntrance HiFi-M8 and delivers superior power for your favorite headphones. Note: Some pictures above illustrate applications alongside 3-rd party products, which are not included with this item. HiFi-M8 V2 and Cerene dB Transparent Headphones available separately.