Thöress Audio EHT Integreret forstærker - Triode Hybrid

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Our Hybrid Triode Integrated Amplifier (EHT Integrated) offers 2x20 watts of output
power into a 6 ohm load combined with very low output resistance (high damping
factor). Such providing excellent drive capability for loudspeakers with medium to
low efficiency or with critically low impedance which may present a challenge for
our all-tube single-ended triode amplifier models. While offering the same level of
ultimate sonic excellence without involving exotic costly power tubes.

The amplifier is built with meticulous hand construction using our proven point-topoint wiring techniques, whereas much care has been taken in arranging each aspect
of the internal construction to ensure low noise performance, ease of service and
the highest reliability for many years to come. 

The amplifier is based on a unique minimalist single-ended zero-feedback vacuum
tube MOSFET hybrid topology which we call EHT Topology (E.intakt-H.ybrid-T.riode,
Single-Ended Hybrid Triode). Deliberately ignoring the fact that many music lovers
persistently believe in the myth that balanced technology (and the associated XLR
connectors and cable configuration) is generally superior over single-ended
concepts. 
The EHT topology consists of a single-ended triode gain stage (6J5GT,12J5GT or 7A4
vacuum tube) followed by a unity gain MOSFET output stage also operated in singleended (class-A) mode with high idle current. Basic analysis easily shows that...

The EHT principle represents the PUREST form of all possible single-ended triode power
amplifier configurations!

Læs mere HER

Vacuum Tube MOSFET Hybrid Integrated Amplifier with 20 watts of output
power per channel (into a 6 ohm load).
• Driving capability for critical loudspeaker loads due to very low output
impedance (high damping factor).
• Ultimate sonic excellence on par with no-compromise all-tube single-ended
triode amplifiers, yet without involving exotic and costly power tubes.
• Unique minimalist zero-feedback EHT schematic: single-ended triode gain stage
(6J5GT tube) driving a unity-gain MOSFET output buffer operated in single-ended
(class-A) mode with high idle current.
• Total avoidance of protection circuitry.
• 4 line level inputs (2x4 RCA jacks) with equal gain manually selectable via rotary
dial.
• Remote volume control via high-grade motor driven dual potentiometer with
excellent channel balance and low angle sensitivity (for conveniently fine volume
adjustment).
• High grade electrolytic capacitors made in Germany in the power supply.
• Low noise low leakage dual-coil C-Core mains transformer made in-house

• Full hand construction, point-to-point wiring throughout.
• Non-magnetic aluminum casework, anodized printing on front and rear panel,
powder-coated lids.
• Dimensions 434x450x184 mm, 184=20 (feet)+134+30 (tubes over case),
450=434+16 (speaker binding posts).
• Dimensions of the shipping crate: 650 x 650 x 350 mm, weight 18Kg.