• All-in-one amp that encompasses three key functions: a pure tube Headphone Amplifier, Pre-amp and a DAC 
• Also acts like a headphone stand
• Allows you to choose between low/high impendance and customize it to your headphones
• Elegant design, with a wooden housing, takes little space on the rack 

Amplifier

Euterpe is a single-ended headphone amplifier with unbalanced circuit design, so there are no balanced inputs or outputs. The lineup of tubes is classic Auris, with the use of two 7-pin Ei PL95 tubes, which are the equivalent to 6DL5, and a single ECC81 input tube, also known like 12AT7 (running in Ultra-Linear mode). The output power is just a shade lower at 0.9W into a 32Ω load. The magic of Euterpe trully happens when it is connected to a high-end DAC which tells you a lot about how good this amp can be inside a beautifully crafted wooden enclosure.

Impendance Selector

To make your headphones shine in the best possible way, we designed Euterpe with impedance swicher marked with L/H (low/high). The inference here is a wider range and simpler switching design - L (low) at 32-80 Ohm and H (high), anything greater than 150 Ohm. For an example, with the majority of planar headphones that tend to rate less than 80 Ohm and are more impedance agnostic than dynamic headphones, you need to have that switch set to L (low).

Linear PSU

Euterpe power supply is an external regulated linear power supply, with a switchable 115/230 VAC capable output, and will keep noise to the minimum. It uses a fairly stiff but sturdy 4-pin connector 1m cable, so you can place the two units pretty far apart.

Technology

Euterpe comes with the technology one would expect from an Auris Audio amplifier:

• It is composed of  xmos chip that handles USP input duties, a Sabre ES9018 chip that handles the conversion duties, a 12AT7 tube that handles the pre-amp functions with a Mundorf capacitor in line between the preamp and power tubes
• The supplied power tubes are NOS (new old stock), branded Ei and stamped Yugoslavia: A single ECC81, dual-triode tube serves as the Euterpe’s input stage, while a separate PL95 pentode power tube is provided for each channel; these feed the output transformers. A selector set on the top plate allows you to use the PL95s, or EL95s with a lower voltage
• The power supply has a captive five-pin cable that connects to the amp, and a 15-amp IEC connector for a standard grounded AC power cord

Euterpe not only delivers enough power to get your headphones loud enough, it also delivers the right kind of it

„The Euterpe is a wonderful piece of design and a delight to use. If you prefer audio gear that delivers an extra bit of realism, life, breath, soul -- and your taste is more towards classical and jazz, or lighter, folky singer/songwriter fare, then you’ll dig the Euterpe." - Brent Butterworth, Sound Stage Solo

„The sound quality would be reason enough to buy the Auris Euterpe, but the craftsmanship and impression of quality are the features I just can’t get over.  Truth be told, there are tons of wonderful high-end amps and DACs out there, but none feel as unique and thoughtfully-crafted as this." - Carroll Moore, Major HiFi