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SBH-07 S-BACH HiFi Dual Channel Single Ended Vacuum Tube 300B Push 845/211 Push Bile Machine Power Amp 4ohm+8ohm/35W/25W Class a
SBH-07 S-BACH HiFi Dual Channel Single Ended Vacuum Tube 300B Push 845/211 Push Bile Machine Power Amp 4ohm+8ohm/35W/25W Class a
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$5,598.00
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Description
SPECIFICATIONS
Brand: queenway
Channel: 2 (2.0)
Feature: /
Type: Home Amplifier
Use: /
place of origin: Guangdong, China
private mold: NO
Product parameters: |
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Product type |
Dual channel push-pull vacuum tube audio power amplifier |
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Model |
300B Push 845 Single End |
300B Push 211 Single End |
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Rated output power |
35W (Class A) |
20W (Class A) |
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Frequency Response |
15Hz-20KHz(-3dB) |
18Hz-20KHz(-3dB) |
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Harmonic distortion |
1%(1kHz) |
1%(1kHz) |
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Signal-to-noise ratio |
86dB |
86dB |
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Input sensitivity |
100mV |
50mV |
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Input impedance |
100K |
100K |
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Output impedance |
4Ω+8Ω |
4Ω+8Ω |
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Input signal |
3-way simulation+ BT 5.0 |
3-way simulation+ BT 5.0 |
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Potentiometer |
Alps of Japan |
Alps of Japan |
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Power Transformer |
Epoxy resin sealing, noise reduction, shockproof, and moisture-proof treatment |
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Push (invert) transformer |
Imported EI54 iron core, oxygen-free copper enameled wire, layered and segmented winding, frequency response 10Hz-40KHz |
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Output Transformer |
96 * 60E Japanese Z11 iron core, oxygen free copper enameled wire, layered and segmented winding, frequency response 10Hz-48KHz |
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input voltage |
220V ± 10% Other voltages Contact customer service |
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Remote control function |
Volume+Power+Input Selection |
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Input power |
425W |
350W |
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Vacuum tube |
Former Soviet Union 6H8C * 4 S-BACH/300B*2; 845*2
|
S-BACH/300B*2; 211*2 |
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Size |
44*31*50CM (W*H*D ) |
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Screen working voltage |
DC1100V |
DC1100V |
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Gross weight |
52.6kg |
52.6kg |
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Net weight |
47.6kg |
47.6kg |
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The "impedance capacitance coupling" equidistant DC coupling scheme that subverts traditional circuits between stages has outstanding advantages:
The audio current circuit of the overall circuit has no capacitor intervention, avoiding the distortion caused by the phase difference between the potential shift and the electric field strength caused by the "dielectric loss angle" of the capacitor, as
well as the capacitance reactance. The low-frequency attenuation caused by (Reactive Reactance).
The audio current circuit of the overall circuit has no capacitor intervention, avoiding the distortion caused by the phase difference between the potential shift and the electric field strength caused by the "dielectric loss angle" of the capacitor, as
well as the capacitance reactance. The low-frequency attenuation caused by (Reactive Reactance).
Transformer push/phase difference is zero
Transformer driven circuit "is a recognized first-class technology in the field of audiology. The phase difference between the left and right channels of the circuit is zero, and there is no phase delay of the signal. While the transformer is transmitting
audio signals, the" impedance ratio "of the transformer can also be used to achieve the best" impedance matching "between adjacent circuits,
Transformer driven circuit "is a recognized first-class technology in the field of audiology. The phase difference between the left and right channels of the circuit is zero, and there is no phase delay of the signal. While the transformer is transmitting
audio signals, the" impedance ratio "of the transformer can also be used to achieve the best" impedance matching "between adjacent circuits,
An excellent vacuum tube audio amplifier should have two main elements: first, a reasonable circuit architecture; The second is to design transformers with reasonable design and excellent quality. This machine uses a total of 8 transformers, including two power transformers, two output transformers, and four push transformers.
Power Transformer
Famous brand EEIO company friendly winding, Japanese iron core
High quality enameled wire winding;
High and low voltage separation of power transformer, safe and reliable;
Vacuum impregnation, drying, ultra-high voltage insulation testing to avoid high-voltage breakdown; Epoxy resin sealing for noise reduction, shockproof, and moisture-proof treatment
Output Transformer/Push Transformer
Japanese Z11/EI type iron core production recognized by the fever industry, repeated
Optimize design parameters;
The coil adopts a "layered and segmented" winding system, effectively curbing "leakage inductance"
The generation of "distributed capacitance";
Ensure the width of frequency response,
Enable low, medium, and high frequency utilization
Best performance
Power Transformer
Famous brand EEIO company friendly winding, Japanese iron core
High quality enameled wire winding;
High and low voltage separation of power transformer, safe and reliable;
Vacuum impregnation, drying, ultra-high voltage insulation testing to avoid high-voltage breakdown; Epoxy resin sealing for noise reduction, shockproof, and moisture-proof treatment
Output Transformer/Push Transformer
Japanese Z11/EI type iron core production recognized by the fever industry, repeated
Optimize design parameters;
The coil adopts a "layered and segmented" winding system, effectively curbing "leakage inductance"
The generation of "distributed capacitance";
Ensure the width of frequency response,
Enable low, medium, and high frequency utilization
Best performance
The voltage amplification stage, intermediate stage, and propulsion stage use four highly expressive antique tubes 6H8C from the former Soviet Union, greatly increasing the sound thickness and density, giving the music temperature, emotion, and appeal. The final propulsion tube 300B "and" strong amplification tube 845/211 "are exclusive customized tubes for S-BACH; the music background is quiet, and the medium and high frequencies are given
Startup preheating and high-voltage delay protection
The cathode preheating circuit of the electronic tube starts up for 60 seconds, with a high voltage delay of 60 seconds for supply, effectively avoiding the shortening of the life of the electronic tube due to cathode poisoning, and avoiding distortion caused by uneven cathode emission ability of the "strong discharge tube", greatly improving the service life and sound quality of the entire machine.
The cathode preheating circuit of the electronic tube starts up for 60 seconds, with a high voltage delay of 60 seconds for supply, effectively avoiding the shortening of the life of the electronic tube due to cathode poisoning, and avoiding distortion caused by uneven cathode emission ability of the "strong discharge tube", greatly improving the service life and sound quality of the entire machine.
