West Power 91 line split 300B single-ended fever tube amplifier left and right channel

Condition:New
Type:Logic ICs
Model Number:W91
Speaking of single-ended direct heat pipe enthusiasts, the first time they think of 2A3.300B, 845 single-ended power amplifier, because the power of 2A3 is relatively small, the threshold of 845 is relatively high, so everyone will use 300B as the representative, because the internal resistance of the tube is low and linear Well, the second harmonic is abundant. . . . .
But the most famous 300B single-ended tube amplifier power amplifier is the WE91A antique tube amplifier! Many old enthusiasts are obsessed with this tube amplifier. . . Because the amplifier is equipped with high-sensitivity horn speakers, whether it is mid-range or airy, it is extremely charming. Many Japanese and European enthusiasts have such a consensus! But because the manufacturer of this machine has stopped production, there is very little in the market, and it has been bought and never sold. . .
Therefore, the price is extremely expensive, and it is difficult for most enthusiasts to see her demeanor. They can only do their own DIY according to the line announced on the official website of Xidian, or reproduce it by a small number of domestic manufacturers, but the effect is really low. The WE91 line is very simple. It is the first stage 310 pentode that directly drives 300B. Theoretically, the first stage drive has the advantages of low phase shift distortion and simple circuit. However, the linear distortion of the pentode itself is much larger than that of the conventional two-stage drive of a low internal resistance tube. That is to say, the distortion of the pentode itself means that the output of the 300B work is better, and the performance indicators should be better. If the leakage inductance of the output and the gain distortion of each frequency band are large, the circuit is doomed to fail and the sound becomes pale and weak. . Rough mouth, no musical taste and no beauty. . . Not to mention the sense of air and overtones. . . .
Like the enthusiasts in Dashu, we are adhering to the concept of pursuing exploration and breakthroughs. We have developed this replica WE91 tube amplifier and shared it with enthusiasts. Many DIY friends will ask that this machine does not have a few parts or parts. What tonic capacitor, the price is not high! In fact, the selling point of this machine is: the output technology, and the sound concept of WE！



Tube parameters: 300B (*2) PSVANE

10*12c (*2) Soviet Union,

5U4G(*2) PSVANE

Model: 91A

Power: 8W+8W

Bandwidth: 35HZ-------18kHZ

Signal to noise ratio: 88db

Power consumption: 100W+100W

Weight: 14KG+14KG

Three-dimensional: 400*230*200mm (one channel size)