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HiFi Fri- Mr. Liu  Product model:MS-90B

release date:2021.04.22
Summary 
Good voice! I give this KT88 PP 9.5 points! Highly recommended! After 10 days, It finally arrived in California. The machine is very heavy, especially at the transformer end. It is full of materials and needs to be handled carefully.


                         HiFi Fri- Mr. Liu Product model:MS-90B

Good voice! I give this KT88 PP 9.5 points! Highly recommended! After 10 days, It finally arrived in California. The machine is very heavy, especially at the transformer end. It is full of materials and needs to be handled carefully. As soon as I open the box and power on, I feel attentive. The high voltage is sent slowly for about 30 seconds. This is because the KT88 lamp is long, 1.6A, and the heating time is slow. If the high voltage is sent too early to pull the current, then the front tube and high voltage filter capacitor are easy to be damaged. I haven't heard of the original factory's front-end and push, split phase tube, directly replaced with the old Telefunken 12AX7 and old Mullard 12au7 (need adapter), European small tube sound. One minute later, press bias 1.2.3.4, very good, eh KT88 is set at 55mA, factory test has been adjusted. I like the transformer of Yaqin. It's not too hot, and the bandwidth of the output transformer is very good. I was impressed when I bought the el34 PP a few years ago. Let's sing! The low and medium frequencies are surging in, pushing the 87db Dynaudio C2 into the air! Medium high frequency elegant, gentle, no ear scraping, very smooth. High frequency has a little layer of yarn, which can be said to be full of tube flavor and better fineness - try gold lion KT88 later! 


 The Bluetooth design is very intimate. The sound quality of 5.0 Qualcomm chip is not to be said. Once the mobile phone is connected, it can be paired. Sitting on the sofa and pouring a glass of water, it is quite convenient! Suggestion: the bias current should be adjusted further away from the pipe. Add headphone hole. The rest is perfect!


            

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MS-90B

MS-90B

Output Power:UL55W×2(8Ω)   TL28W×2(8Ω) Frequency Response:5Hz--70KHz(-2dB) Distortion:≤0.8% SNR:≥90dB(A) Input Sensitivity:Intergrated:≤250mV  Maximum Power Consumption:≤390VA Tube:KT88-EH x 4  6N8P  or 6SN7 x 4     12AX7 /ECC83x 2
MS-77T

MS-77T

Output power: 40W + 40W (8Ω) Distortion: ≤0.5% (1KHz) Frequency response: 5Hz -68kHz Signal-to-noise ratio: ≥88dB (A weighting) Input sensitivity: ≤0.23V (1KHz) Electronic tube: 7027B × 4 6J1 × 8 Load impedance: 4Ω-8Ω Power consumption: about 250W
MS-34D

MS-34D

Output Power:32W×2(8Ω) Frequency Response:10Hz--70KHz(-2dB) Input Sensitivity:Intergrated:≤300mV Maximum Power Consumption:≤250W Tube:EL34 x 4  12AU7 x 2          12AX7 x 1  6Z4 x 1 Gross Weight:about 25.5 kg Net Weight:about 23 kg Size:(W)400mm(D)355mm(H)220mm
MS-34B

MS-34B

Output Power:UL38W×2(8Ω) Frequency Response:10Hz--48KHz(-2dB) Distortion:≤1.0% SNR:≥90dB(A) Input Sensitivity:Intergrated:≤260mV Maximum Power Consumption:≤250W Tube:EL34 x 4  6N8P x 2 6N9P x 1   Gross Weight:about 25.5 kg Size:(W)400mm(D)355mm(H)220mm
MS-20B

MS-20B

Output Power: 25W+25W (8Ω) three-pole (TR) connection    50W+50W (8Ω) ultra-linear (UL)  connection Frequency response: 5Hz-80KHz (-2dB)  Distortion: ≤0.5% (at 35W)  Signal to noise ratio: ≥91dB (A) Input sensitivity: combined type&nbs
MC-100B

MC-100B

Output Power: 25W+25W (8Ω) three-pole (TR) connection    50W+50W (8Ω) ultra-linear (UL)  connection Frequency response: 5Hz-80KHz (-2dB)  Distortion: ≤0.5% (at 35W)  Signal to noise ratio: ≥91dB (A) Input sensitivity: combined type ≤ 0.25V Maximum power consumption: ≤370W  Electronic tube: KT88×4 6N8P×4 12AX7B×2  Gross weight: about 31 kg
  MS-84L

  MS-84L

Output power: 2x12W (4Ω-8Ω)  Harmonic distortion: ≤2%  Signal to noise ratio: ≥80db (A)  Frequency response: 6HZ-90KHz  Input sensitivity: 250mV  Input signal level: ≤300mv  Maximum power consumption: ≤90W  Tube: 6P14*4 12AX7B*2
MC-13S

MC-13S

Output power: 40W + 40W (8Ω)  Distortion: ≤0.9%(28W)  Frequency response: 10Hz -76KHz (-2dB)  Signal to noise ratio: ≥85dB (A weighting)  Power consumption: ≤220W  Sensitivity: ≤0.26V  Electronic tube: EL34×4 or 6CA7T×4 12AT7×4  Gross weight: 22Kg  Volume: length 470mm × width 315mm × height 175mm

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