Description

 

Shuguang Audio SG-845-7 Stereo Tube Amplifier Tube Amp Without Bluetooth Rated 21W+21W High-Fidelity

Description:
This is a high-level tube amp, because 300B tube has high frequency and fine mid-frequency transparency, and has the reputation of tube queen in the fever circle. 845 tube is one of the most musical and powerful electronic tubes. Its high, medium and low frequency bands are more pure, transparent and airy. The combination of 300B and 845 tubes forms a single-ended pure Class A tube. It can give full play to the performance of the 845.

Sound quality: This tube amplifier has been sold for many years and has been upgraded and revised seven times. The appearance is gorgeous and noble, the circuit is further optimized, and the core technology to improve the sound quality is mastered, especially transformer driving method, which subverts the general resistance-capacitance driving tube amp in the market. Both the low frequency and the sound field are as good as possible, the sound is warm and full, and the tone is gorgeous, noble and brilliant.

Power: The power of single-ended amplifiers on the market is insufficient, and the music is soft and weak. The general way to increase the power is usually a push-pull circuit, but the crossover distortion of the push-pull machine directly affects the sound quality. In order to solve this problem, our machine uses a single-ended Class A power amplifier circuit to ensure sound quality, and improves power in the following three aspects: 1. Adopt three-stage tube continuous push and transformer push. 2. Increase the number of power transformers and separate independent transformers for high-voltage and low-voltage power supply to ensure high-voltage and safety. 3. The selected high-power 845 tube ensures high-power output, so it can push almost all home speakers. Driving floor speakers will also make the music very atmospheric, rich and full of surging, with strong and solid bass, mellow mid-range, and open high-frequency.

Materials: 1. In terms of parameter quality, carefully select electronic tubes to ensure the perfect combination of tubes and the machine. And the tubes used are all newly produced new tubes, which is convenient for upgrading the tubes in the future. 2. High-quality transformers, the output transformer uses the new Japan Z11 film, and the new Japan copper wire. A total of eight transformers are used. 3. The number of other components is large, the materials used are sufficient, and the whole machine has used up 300 electronic components.

Features:
- Use seventh-generation technology to improve the ideal sound quality
- Focus on sound quality research and pursue excellence
- Using transformer drive technology, wide frequency band, good high and low frequency extensibility, and great dynamics. The sound field is wider, deeper, bigger and full of liveness
- Self-made single-ended Class A circuit, with less distortion, clearer sound, calmer and less rigid, rich details, and strong sense of presence
- Soft-start technology, non-contact NTC soft-start boot, clean bottom noise, quiet background, and protect the life of tubes
- Insist on power supply is the soul of sound quality. Use high and low voltage independent transformers to supply power to ensure high voltage, high power, transparent and full sound, high thrust and strong sense of surging
- Eight transformers are more powerful. It adopts low-voltage transformer, high-voltage transformer, left-channel output transformer, right-channel output transformer, right-channel drive transformer, left-channel drive transformer, high-voltage choke transformer, and soft-start transformer
- Adopt newly produced high-end electron tubes
- There are many parts, the whole machine with about 300 electronic components
- Silver-plated wire inside the machine, the sound is bright, sweet and delicate
- Military grade resistance, extremely low temperature drift coefficient
- Current meter made in Taiwan. It is not a simple VU meter that plays a beautiful role, but monitors the working status of tubes in a timely manner, to ensure that the tube is working in an ideal state, and to ensure high-fidelity sound quality
- Imported gold-plated terminals make the sound better
- Focus on details, create professional tube amp. Thick mesh cover, care for safety. Integrated welding of scaffolding and circuit board, taking into account sound quality and power
- Specially customized shock absorber feet to reduce the impact on sound quality
- Brushed aluminum alloy panel, noble appearance

Technical Parameters:
- Product Type: Single-ended pure class A tube power amplifier
- Rated power: 21W+21W(max. 24W)
- Whole machine power consumption: 340W
- Frequency response range: 20Hz-25kHz
- Noise voltage: <1mV
- Signal to noise ratio: 88dB
- Input impedance: 100KΩ
- Input sensitivity: <1V
- Input signal: two channels (without Bluetooth)
- Output impedance: 4Ω, 8Ω
- Power supply voltage: AC 110~ 220V ±10%
- Dimensions: 485x280x295xmm (the largest)
- Net weight of the whole machine: 38kg
- Resistor: RJ military-grade resistor
- Main capacitors: for American EC, Canadian EACO, etc.
- Volume potentiometer: Japanese type 27 fully sealed potentiometer
- Screen current monitor: Customized in Taiwan
- Welding method: manual scaffolding and mixed welding method of PCB board
- Power supply transformer (four): parameter technical confidentiality, epoxy resin sealing, noise reduction, shockproof, and moisture-proof treatment
- Output transformer (two): 96X60 specification EI type Japan Z11 iron core, epoxy resin anti-vibration and moisture-proof treatment
- Promote transformers (two): parameter technical confidentiality
- Tubes: 845 series*2, 300B series*2, 6SN7 series*2
- Case: All aluminum case

Package Included:
- 1 x Set of Tube Amplifier

Note:
- Items in silver shell are delivered by default. If you want an amp in black shell, please contact us to pay extra money when purchasing. Thank you!
- It is assembled.