Tsakiridis Achilles Ultra
Achilles Ultra is a power amplifier in monoblock configuration. It’s design is a class A 300B triode amplifier with mu-stage driving circuit.
All electronic components are through hole type soldered by hand. Achilles Ultra utilizes our 8 layer handmade output transformers for superb sound quality.
The 8W of power per channel of Achilles requires high sensitivity loudspeakers to enjoy your music. The triode class A configuration of the 300B with the high linearity of the preamplification stage offer an unsurpassed audio experience to every audiophile.
Gold plated RCA connectors are implemented for the signal input and WBT-0703 Next Gen binding posts for the loudspeakers. Carefully selected values and types of the electronic components contribute to the reliable circuits operation and the high sound quality of the amplifier. Mundorf Evo signal capacitors are used in Achilles Ultra.
The meticulous PCB design ensures excellent behavior in SNR and distortion. Inner signal wiring with high quality shielded signal cable. 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 multilayer output transformers allow the amplifier to reveal the sound stage and all the music details through the entire audio spectrum.
Made by us and tested thoroughly for quality and reliability. The same applies to the power transformer. The positioning of the transformers is such that minimizes the magnetic coupling between power and output transformers.
FEATURES & SPECS
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Inputs |
1 line input |
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Input/Output connectors |
RCA gold plated |
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Speaker connectors |
WBT-0703 Next Gen |
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Power supply capacitors |
United Chemicon 105 °C |
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Signal capacitors |
Mundorf Evo capacitors |
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Power resistors |
Carbon film 5% tolerance |
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Power transformer |
Handmade 250 W each unit |
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Output transformer |
Handmade 8-layer windings with high quality core |
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Driving stage tubes |
1 × 6SL7, 1 × EL34 (each unit) |
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Power tubes |
1 × 300B (each unit) |
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Output Power |
2 × 8 W |
|
Input impedance |
100 kΩ |
|
Output impedance |
6 Ω |
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Input sensitivity |
1 V |
|
Signal to Noise Ratio (SNR) |
85 dB |
|
Rise time |
4 µs @ 10 kHz |
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Harmonic distortion |
2 W @ 1 kHz → 0.40% |
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Frequency response |
–3 dB, 12 Hz – 55,000 Hz |
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Power supply energy |
80 Joule (each unit) |
|
Power consumption |
95 W (each unit) |
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Weight |
4.5 kg (each unit) |
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Dimensions (W × D × H) |
17 × 43 × 22 cm |