MS-300B
This class A amp features 2x 300B, 2x 6SN7GTB and 2x 12AT7 valves. I have not owned one or ever heard one.
Yaqin MS-300B with remote control
Click the schematic to view:
Yaqin MS-300B schematic
Comments
Comment from Kristian
Time: April 7, 2009, 8:25 am
I have owned one for a month now and compared to the smaller 6V6 this has much bigger soundstage. Alltough 300B pushes only 9,5 watts per channel, it sounds very powerful with deep and accurate bass. Along with 300B tubes this amp has one 274B rectifier tube in the middle.
This amp also has headphone out (32 Ohms), but with my 300B it sounds very cloudy compared to 6V6. Maybe there’s something wrong with it, but I dont have the skill to do anything about it. This amp also comes with remote, which is exactly the same with all Yaqin amps. With 300B’s remote it’s easier to adjust the volume just a little compared to 6V6.
Amp seems to be very well built and heavy, as SET-amps usually are.
Without a doubt the best Yaqin amp and worth every pound, euro or dollar.
Comment from Kristian
Time: November 25, 2009, 3:14 pm
Made some tube rolling with Sylvania JAN12AT7WA & 6SN7GTB on the pre-stage and Billington 300B’s for the power-stage. I’m currently pairing Yaqin with Tekton Design Model 4.5 -fullrange speakers and I’ll have to say, that I’m pretty close to perfect.
I had the Yaqin serviced a while ago, and the technician was very impressed of the quality in this amp concidering the price. I’m going to stick with this one for a long time.
Comment from Nguyen thanh Dung
Time: February 26, 2010, 9:46 am
I need schematic of MS500B with EL34 tube. Who can helf me???
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Time: March 31, 2009, 8:47 am
[...] I was given a schematic for this so have added it. [...]