| Customization: | Available |
|---|---|
| Noise: | 92dB |
| Hi-Fi: | Hi-Fi |
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Due its high cost effective and high sound performence and product quality. After a sucess never have been for GR100 high level tube amplifier since 2 years, it's a top selling high level tube amplifier in the world.
2021 Muzishare just released R100 805 latest version, the updates are:
Replace old standard 805/300B/5U4G tube by some special customize replica vintage WE 805/300B/5u4g tubes, it's get a sinification upgrade about the sound quality with a quieter background. using same metals than replica West Electric tube, 300B and 5U4G(274B) are black paltes, 805 Tubes come without high voltage cable
Replace the stadard preamp tube by JJ ECC83 and EH6SN7 ,
Add a infrared remote control,
Upgrade the inside circuit design, and replace with high precision resistor
Upgrade the top quality chock with z11 iron with fully shielded and single crystal copper
Features:
The whole panel is made of 14mm aerospace solid aluminum wire drawing. The knob is made of full solid aluminum high-gloss car. The signal switch on both sides adopts Japanese knurling technology, and the hand damping is very good. High-precision multi-function output power meter and ammeter, backlight black The bottom is specially made of film. The back of the dial is set with dozens of LED lamp beads, the double structure chassis base, the outer layer is laid with 3mm brushed aluminum plate, and the inner layer is made of 2mm thick steel plate.
The GR100 power switch key is placed on the left side of the panel; the side knurling knob has built-in 4-speed dedicated functions, namely BIAS V1, BIAS V2 and METER H, METER L, to adjust the power tube V1, V2 bias current selection and level meter sensitivity. Damping selection. The right side of the meter head is the volume adjustment knob, which uses a high-precision ALPS potentiometer specially designed in Japan. The right-hand knurled knob is a 6-speed source input selection file, which are PHONO (single release), lin1, lin2, lin3, BALACNCE (balanced). ), PRE IN (pure power amp)
GR100's high-voltage power supply and filament power supply independently use two Z11 iron core high-efficiency power supply cattle, the output transformer uses two Z11 iron core wide-band EI single-ended output cattle, all powered separately.
The GR100 filter circuit uses 12 1500uf 600V Japanese Nichicon large hydrothermal capacitors and two specially designed chokes.
The GR100 not only has the full analog amplification function of the vacuum tube power amplifier, but also puts the enthusiast's favorite vinyl singing function into it. The MM cartridge input R100 also has pure post-level function. The GR100 has three sets of analog audio inputs, one group sings. Head input, a set of pre-stage inputs, and also a set of balanced input BALANCE ports, this is a true balanced input, R100 output has 4 ohms, 8 ohms and 16 ohms respectively, support all impedance speakers.
Grand is one of best chinese hi-fi equiment production manufacturer, Their products have past Certificate of Conformity European(CE)
300B Drive 805 Amplifier:
The sound field is wider, Magnificent and Overwhelmed bass, Pound the heart , and also same than 211, 845 tube amp, have some superior analytical power, rich flavor, delicate and high density sound , full of moisture and transparent
Technical Parameters:
Rated output power: 50W + 50W
Input : PHONO, lin1,lin2,lin3,Balance ,Pre IN
Output Impedance: 4Ω 8Ω 16Ω
SNR: 92dB
Output balance of the left and right:
Input Sensitivity: 1000mV (pre in)
Harmonic distortion: 1% (1kHz) Frequency Machine: 15Hz ~ 30kHz (-1.5dB)
Net weight: 42KG
Package weight: 48KG
Power consumption: 450W
Preamp tube: JJ ECC83(12AX7) × 2 , EH 6SN7 × 2
Drivertube: 300B × 2 (special customize black plate , same quality than replica WE300B)
Power tube : 805 x2 (special customized, same quality than replica WE805)
Rectifier: 5U4G × 1 (special customize black plate , same quality than replica WE274B)
Dimension:(W × D × H):430*435*265mm
Tube Amplifier Precautions
1. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads(speakers) or load short circuit when the switch is ON. (Hifi exquis 1101017)
2. Too high or too low power supply voltage does irreversible harm to the amp,preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply.
3. Temperature is higher when tube amps working, placing attention to ventilation, cooling. (Hifi exquis 1101017)
4. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes.
5. You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.so during the first 100h use time the sound maybe is not the best,you can also use your own run-in method.
6. If you donot sure how to plug the tubes, please contact us before try it
Speakers connection
All tube amplifier used with stereo mode: L(left) and R(right) speakers.
Normally there are 6 speaker cable connectors: +8L, +4L, -0L, -0R, +4R, +8R
Example: +8L and -0L are for connecting with your Left 6-8ohms speaker
-0R, +4R is for connecting with your Right 4ohms speaker
Tube amplifier guaranty :
Tube amplifier Guarantee: 6 months for tubes sold with amplifier, 1 year for the amplifier and PSVANE tube
| Amp Name | 2021 New Grand 805 Tube Amplifier HIFI ECC83 6SN7 300B Driver Lamp Integrated / Power Amp Remote |
| Technical Parameters | Rated output power: 50W + 50W Input : PHONO, lin1,lin2,lin3,Balance ,Pre IN Output Impedance: 4Ω 8Ω 16Ω SNR: 92dB Output balance of the left and right: Input Sensitivity: 1000mV (pre in) Harmonic distortion: 1% (1kHz) Frequency Machine: 15Hz ~ 30kHz (-1.5dB) Net weight: 42KG Package weight: 48KG Power consumption: 450W Preamp tube: JJ ECC83(12AX7) × 2 , EH 6SN7 × 2 Drivertube: 300B × 2 (special customize black plate , same quality than replica WE300B) Power tube : 805 x2 (special customized, same quality than replica WE805) Rectifier: 5U4G × 1 (special customize black plate , same quality than replica WE274B) Dimension:(W × D × H):430*435*265mm |
| Components | Pot/Bias Japan, Sweden brand, etc |
| Features | The whole panel is made of 14mm aerospace solid aluminum wire drawing. The knob is made of full solid aluminum high-gloss car. The signal switch on both sides adopts Japanese knurling technology, and the hand damping is very good. High-precision multi-function output power meter and ammeter, backlight black The bottom is specially made of film. The back of the dial is set with dozens of LED lamp beads, the double structure chassis base, the outer layer is laid with 3mm brushed aluminum plate, and the inner layer is made of 2mm thick steel plate. The GR100 power switch key is placed on the left side of the panel; the side knurling knob has built-in 4-speed dedicated functions, namely BIAS V1, BIAS V2 and METER H, METER L, to adjust the power tube V1, V2 bias current selection and level meter sensitivity. Damping selection. The right side of the meter head is the volume adjustment knob, which uses a high-precision ALPS potentiometer specially designed in Japan. The right-hand knurled knob is a 6-speed source input selection file, which are PHONO (single release), lin1, lin2, lin3, BALACNCE (balanced). ), PRE IN (pure power amp) GR100's high-voltage power supply and filament power supply independently use two Z11 iron core high-efficiency power supply cattle, the output transformer uses two Z11 iron core wide-band EI single-ended output cattle, all powered separately. The GR100 filter circuit uses 12 1500uf 600V Japanese Nichicon large hydrothermal capacitors and two specially designed chokes. The GR100 not only has the full analog amplification function of the vacuum tube power amplifier, but also puts the enthusiast's favorite vinyl singing function into it. The MM cartridge input R100 also has pure post-level function. The GR100 has three sets of analog audio inputs, one group sings. Head input, a set of pre-stage inputs, and also a set of balanced input BALANCE ports, this is a true balanced input, R100 output has 4 ohms, 8 ohms and 16 ohms respectively, support all impedance speakers. Grand is one of best chinese hi-fi equiment production manufacturer, Their products have past Certificate of Conformity European(CE) 300B Drive 805 Amplifier: The sound field is wider, Magnificent and Overwhelmed bass, Pound the heart , and also same than 211, 845 tube amp, have some superior analytical power, rich flavor, delicate and high density sound , full of moisture and transparent |
| Speakers connection | All tube amplifier used with stereo mode: L(left) and R(right) speakers. Normally there are 6 speaker cable connectors: +8L, +4L, -0L, -0R, +4R, +8R Example: +8L and -0L are for connecting with your Left 6-8ohms speaker -0R, +4R is for connecting with your Right 4ohms speaker |
| Customized | OEM, ODM, OBM |
| Tube Brand | Ruby, Shuguang, JJ, EH |
| Brand | Grand or custom as per logo plates |
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