Erato

Class A Headphones Amplifier

Erato is an EL84 OTL class A headphones amplifier. Erato has a very low output impedance so it can drive any type of headphones.
All electronic components are through hole type soldered by hand.

Erato comes with a high quality built-in Bluetooth audio receiver. Also there are 2 single ended line inputs. Erato provides a 6.35mm phones jack connector along with a 4pin XLR to plug in your headphones.
Gold plated RCA and XLR connectors are implemented for the signal inputs/outputs.
For the volume control the classic blue Alps is used.
Carefully selected values and types of the electronic components contribute to the reliable circuits operation and the high sound quality of Erato. Non inductive polypropylene film capacitors are used on the signal path.
The meticulous PCB design ensures excellent behavior in SNR, distortion and channel separation. Power wiring uses high quality copper cables of more-than-needed AWG gauge, to achieve low impedance power transfer. All power cables are twisted in pairs to minimize the electromagnetic interference.

The handmade power transformer is tested thoroughly for quality and reliability. The positioning of the transformer is such that minimizes the interference with the electronic circuits. Furthermore the transformer has copper foil shielding.

Gallery

Features

Inputs: 2 line inputs
Wireless connection: Bluetooth v5.0 audio receiver
Outputs: 1×6.35mm phones jack, 1x4pin XLR
Input selection: High grade signal relays
Input connectors: RCA gold plated
Volume control: Blue Alps
Power supply capacitors: United Chemicon 105oC
Signal capacitors: Non inductive polypropylene film capacitors
Power resistors: Carbon film 5% tolerance
Low power resistors: Metal film 1% tolerance
Power transformer: Handmade 45W
Driving stage tubes: 2x12AT7
Power tubes: 2xEL84

Specifications

Input impedance: 100 kOhm
Signal to Noise Ratio (SNR): 90db
Power consumption: 30W
Weight: 2kgr
Dimensions (WxDxH): (31x25x9)cm

Notice: Features and specifications is subject to change without notice. Photos may vary from actual product.