Tsakiridis Erato Ultima
rato Ultima 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 Ultima 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 Ultima. Mundorf Evo silver gold oil 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.
FEATURES & SPECS
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Inputs |
2 line inputs |
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Wireless connection |
Bluetooth v5.0 audio receiver |
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Outputs |
1 × 6.35 mm headphone jack, 1 × 4-pin XLR |
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Input selection |
High grade signal relays |
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Input connectors |
RCA gold plated |
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Volume control |
Blue Alps |
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Power supply capacitors |
United Chemicon 105 °C |
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Signal capacitors |
Non-inductive polypropylene film capacitors |
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Power resistors |
Carbon film 5% tolerance |
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Low power resistors |
Metal film 1% tolerance |
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Power transformer |
Handmade 45 W |
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Driving stage tubes |
2 × 12AT7 |
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Power tubes |
2 × EL84 |
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Input impedance |
100 kΩ |
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Signal to Noise Ratio (SNR) |
90 dB |
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Power consumption |
30 W |
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Weight |
2 kg |
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Dimensions (W × D × H) |
31 × 25 × 9 cm |