Hybrid Power Amps

Model no: SEH-101-EX-Mk2 / SEH-101-UX-Mk2

Typical retailer on-sale price : C$4,080 / C$4,980

Direct-out-of-our-factory price C$2,080 Untitled Document [US$ 1664] /C$2,480 [US$ 1984]

140W x 2ch high current single-ended tube hybrid power amplifier

This is one of our state-of-the-art design hybrid power amplifiers, which 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 output transformer of SETamplifier is replaced with a super high current, high damping factor solid-state transformer, which can output max. peak music power of 140W/ch at 4 ohm loading , this amplifier can even drive down to 2 ohm with reasonable loudness. Built-in over-temperature and over-current protection for safety operation even under extreme condition. The tube section is working in an optomized pure class A single-ended operation mode, in order to achieve the purest and most natural tonal quality.

This new Mk2 version has a very special feature of "Air" or "regular" mode selector, for speakers with good enough high frequency just set to regular mode, for speakers with darker sound then set to "airy" mode to similate the effect of adding a high grade super tweeter.

The tube section can even use tons of different power tubes like 6550, EL34, 6L6, 6V6, 6F6, 6K6, 5881, 6CA7, KT66,KT77,KT88...etc. The UX version come with the 6550 power tubes , it can also use the EL32 NOS Mullard tubes. All direct plug and play without the need for any bias calibration.

This unit built with input level / gain control, this feature can make this amp use as a single input integrated amplifier, or use in multiple amplifier (bi-amp / tri-amp ) mode , and can easily balance the gain between different power amplifiers..

If you were unaware of this amplifier's construction, and you judge the sound quality only by listening, you would believe it is a pure tube power amplifier and not a hybrid.You can have both the smooth and silkiness of single-ended sound with very good punch, rich and controlled bass.

Upper set of photos shows regular version (SEH-101EX-Mk2) ,

Lowest set of photos shows the ultimate version (SEH-101-UX-Mk2) with dual mono power supply, KT150 (default : 6550) power tube , and EL32 compatibility

No. of inputs 1 set of RCA input 
No. of outputs 1 set of speaker outputs (2 ohm to 16 ohm)
Freq response 1Hz - 200Khz (-3db)
S/N better than 90 db at full power
Gain x20 (26db)


manufacturing hand-wired point to point for the tube section

2 x 6L6GT (alt: 6550, EL34, 6L6, 6V6, 6F6, 6K6, 6G6,6Y6,5881, 6CA7, KT66,KT77,KT88)

UX version : 6550 x 2 (alt: KT66,KT77,KT88,KT90,KT99,KT100,KT120,KT150, EL32, EL34, CV1052, VT52, 6V6, 6G6, 6K6, 6Y6 , 6L6, 6CA7, 5881...etc)

Mk2 version upgraded with super low noise circuit design

 Output power

70Wrms x 2 into 8 ohm

140Wpk x 2 into 4 ohm


1 year parts and labor warranty under normal operation condition
standard chassis : Silver aluminum face plate with black anodize aluminum body

(optional chassis :  solid-oak, super-gloss MDF, metallic MDF black piano....etc)


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