Single-ended DHT Super OTL Power Amps

Model no: SE-845-80W-Delux
Expected retailer clearance price after chain of beneficiary $12,000 or even more

No-frills out-of-the-factory price C$6,380 Untitled Document [US$ 5104] only !!

Budget cut-cost version can go as low as C$5,380 [US$ 4304] !!

80Wrms x 2  single-ended DHT pure class A triode Super OTL power amplifier with true balanced inputs


This is our high power series of single-ended DHT Super OTL power amplifier which use the 845 or 211 tubes. Input tubes can use 6SL7, 6SN7, 6SU7 , 5691, 5692, ECC32, ECC33, ECC35 and all equivalents.

This model has both RCA and XLR inputs, power-on delay and speaker DC offset protection circuit , over temperature protection circuit also included for maximum safefy consideration.

This amp features the following mind-blowing characters:

1. All tubes working in pure class A single-ended operation mode with zero negative feedback, as well as our special 3D point-to-point and component-to-component hand wiring technique.

2. Advanced new age revolutionary power supply and amplification design result in much better sonic performance than others who asked for a much higher price tag

3. Our proprietary Super OTL design without output transformers, maximum damping factor and most widest bandwidth can be achieved, the beautiful characters of the 845 is totally exposed, the bass punch, control and richness is so good that exceeds any traditional 845 designs while the mid and high range silky outstanding dynamics as well as sweetness still holds. Just one single 845 as output tube, no need to parallel two or more tubes, so the most puriest and linear class A sound as result.

4. Super low noise level, you can hardly hear such quiet and dark background from an old school 845 / 211 design

5. 100% Automatic bias and no hum adjustment is necessary, no need to re-calibrate but just plug and play of different tubes. The 845 tube works under a totally safe and long lasting operation conditions, which can almost last forever until the filament drop dead.

6. Dual power filtering capacitor banks design for maximum channel separation either small or large signal reproduction.

7. Integrated our most advanced MDE (micro-dynamics extraction) design. Which can let very minute information originally immersed below background noise surface out effortlessly. You can easily hear the real end of each music note in the recording which you never experienced before, with those invisible links between each notes. Every musical instrument will have astonishing 3D separation from each other but with the invisible musical link in between. Any musician can get really excited by the performance of this circuit, since each phrase of notes and chords can easily tell without masked by vocals or other instruments, a real musical reproduction of sound.

8. Real out-of-the-factory price, no expensive marketing and reviews which cost typical 80% or more of the unit price. Your each one dollar investment get at least 5 to 10 dollars back in terms of sound.

9. Retro look VU meter design with elegant solid-wood side panel, all solid aluminum panels as well.

10. Soft start filament supply to 845 tubes for prolonged life time.

11. 100% professionally hand-built in Canada by 3D component-to-component and point-to-point wiring technique .

Budget version comes with regular all aluminum or aluminum hybrid chassis, without VU meter, only single bank power filter capacitor, silver plated tube sockets, Shuguang classic 845 matched pair instead of Psvane 845 pair. All other features are the same as Delux version

No. of inputs 1 set of RCA inputs + 1 set of XLR balanced inputs (input impedance 100Kohm typ)
No. of outputs 1 set of speaker outputs ( 4-16 ohm)
Freq response 5Hz - 50Khz (-3db)
S/N > 85db at full power output
Phase non-inverted
manufacturing hand-wired point to point for tube and power supply sections
Tubes used 6SL7/6SU76SN7/ECC32/ECC33/ECC35/CV181/5691/5692 x 2 + 845/211 x 2
Output power /ch

80Wrms (8 ohm) 1Vrms RCA input to full output power (gain ~= +26.8db)

160Wpk (4 ohm)

1 year free parts and labor warranty, tubes 90 days under normal operation condition

standard chassis for delux version : solid wood + thick Aluminum hybrid chassis

standard chassis for budget version : Regular all aluminum or Aluminum hybrid chassis (chassis upgrade possible with additional cost )


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