All-in-one amp can be used in many ways. Since it is multi-functional it can work like a headphone amplifier, pre-amplifier or DAC. Euterpe can work with its own integrated DAC, or you can connect it with another DAC as well. Also, its pre-out function can be used in case you want to connect it to a smaller system at your home.
A Headphone Stand
The possibility to be used like a headphone stand , makes Euterpe strangely utilitarian for such a high-end piece of hardware. Your headphones fit right on top, with a shallow saddle cut into the wood, to keep the cans in place. It can take a full-size headphone and won’t heat up or burn your precious cans.
DAC inside can play modern sources. OTG input capability has some baseline specifics, including a decoding capability of up to DSD128, PCM max 32bit/384kHz. An XMOS USB DAC and ESS Sabre chip-set represent the brain of Euterpe. The DAC quality is impressive, with beautiful details captured.
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 is really when it is connected to a high-end DAC which tells you a lot about how good that amp can be inside that beautifully crafted wooden enclosure.
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.
Tubes: 2x PL95 / 1x ECC81
Amplifier Configuration: Single Ended
Power output: 0.9 W
Conversion rate: USB: DSD64, DSD128, PCM (max 32bit/384kHz)
Output Impedance: Low: 32-80 Ohm
High: > 150 Ohm
Power supply: 115 / 230 VAC
Inputs: 1 x USB, 1 x RCA
Outputs: 6.3 mm Stereo / RCA Pre out
Dimensions (WxHxL) : 270mm x 210mm x 230mm
Weight (kg): 4.1/NET (without PSU)
Weight (kg) PSU: 1.1/NET
Dimensions PSU (WxHxL): 95mm x 185mm x 55mm