Hybrid Power Amps

Model no: SE-300B-100W-Ultra
C$7,880 Direct Order Price


100Wrms x 2  single-ended 300B power amplifier with balanced inputs

This is our high power series of single-ended 300B power amplifier, which inherite the sweet and smooth airy sound of the pure tube version of 300B amplifier, and at the same time process the big dynamic and high power driving capability. Now you don't need to use super high efficiency speaker to work with your 300B but free to use whatever speakers, and still can fully utilize the super sweet character of this tubes.

This model has both RCA and XLR inputs, 5U4G tube rectifier power supply, power-on delay and speaker protection circuit included for maximum safefy consideration.

Gain adjustment for each channel which can use to balance those un-matched NOS tubes

This model use our newly developed advanced analog dithering technology to further enhance the details, richenss, density and texture of the 300B tube sound which even pure tube 300B amp cannot compare with,

Front end stage can use 6SL7 / 6SN7 / 6SU7 / ECC32 / ECC33 / ECC35 / CV181

Intermediate stage can use 6L6 / 6V6 / 6Y6 / 6K6 / 6F6 / 6G6 / 6550 / EL32 / EL34 / 5881 / 6CA7 / KT66 / KT77 / KT88 / KT99 / KT100 / KT120

Output stage use 300B

Rectifier can use 5U4G / 5AR4 / 5R4 / 274B / GZ32 / STR-104 / STR-1001 / STR-1002

Standard version already comes with 8 x oil caps upgrade as well as 10 x Western-Electric NOS cloth wire upgrade

Option : rear rectifier socket for easy STR connection

This amp features the following mind-blowing characters:

1. 0db NFB from input to output , 300B is working in pure class A single-ended operation mode, and point-to-point hand wired with gold plated sockets

2. 300B is really for amplification of the music signal, not like some others just use 300B in the power supply section and claim to be a high power 300B amplifier

3. No output transformers , maximum damping factor and most widest bandwidth can be achieved, the beautiful characters of the 300B is totally exposed, the bass control and richness is so good that exceeds any traditional 300B designs while the mid and high range sweetness and silkiness still holds.

4. Super low noise level, you will never hear such quiet background from old-school single-ended 300B design

5. No bias calibration , no hum adjustment or any maintainence needed, the 300B tube works under a totally safe and long lasting operation condition which can almost last forever until the filament die.

6. Super low price per watt which you can get from 300B tubes, typical 300B amp charge $300-$400 per Watt , our design only $39 per Watt for this version

7. This unit can easily surpass the sonic performance of those amplifiers selling over $50,000 in the industry


No. of inputs 1 set of RCA inputs + 1 set of XLR balanced inputs 
No. of outputs 1 set of speaker outputs ( 4-16 ohm)
Freq response 2Hz - 50Khz (-3db)
S/N > 90db
Phase non-inverted
manufacturing hand-wired point to point for tube and power supply sections
Tubes used 6SN7 x 2 + 6L6G x 2 + 300B x 2 + 5U4G
Output power /ch

100Wrms x 2 (8 ohm)

200Wrms x 2 (4 ohm)

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

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

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