Hybrid Power Amps

Model no: HP-25-Mk2
C$1,380 / C$1,080 Budget Version Direct Order Price

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25Wrms / channel class AB single-ended tube  hybrid power amplifier

This is one of our state-of-the-art hybrid power amplifiers that combines both the advantage of a transistor amps high current drive (tight bass and good speaker control) and single-ended vacuum tubes amplification (warm and sweet sound with good depth, sound stage, and air). The transistor output stage of the standard version is a voltage to current converter circuit without any NFB or voltage gain, so the non-linear sound of transistors can be greatly eliminated. Left behind is the high damping factor that controls the speaker more efficiently. The tube section is working in an optomized single-ended operation mode to achieve the purest and most natural tonal quality.

If you were unaware of this amplifiers construction, and you judged the sound quality by listening only, you would believe it was a pure tube power amplifier and not a hybrid. You can then have both the smooth and silkyness of single-ended sound with very good punch and controlled bass.

Upper photos show standard version, lower photos show budget version

Specifications
No. of inputs 1 set of RCA inputs (option: XLR balanced inputs)
No. of outputs 1 set of speaker outputs
Freq response 1Hz - 150Khz (-3db)
S/N better than 90 db
Gain x15 - x20 depending on tubes (x20 fixed for budget version)
Phase 180deg inverted (non-inverted for budget version)
manufacturing hand-wired point to point for tube section (PCB for budget ver)
Tubes used

2 x 6SL7 (standard version, handwired tube section)

2 x 6922 (budget version , partial handwire tube section)

1 year part and labor warranty, tubes 90 days under normal operation conditions
standard chassis : Metallic  MDF / Aluminum chassis

(optional chassis : Mirror steel, solid-oak , black piano, super-gloss MDF)



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