YAQIN MS300C 300B Speaker Amplifier

| Ask a Question
Regular price $1,199.99 USD
Sale price $1,199.99 USD Regular price
100% Authentic Guarantee
Lowest Price Guarantee
Members who purchase earn5995Rewards Points, And Two-year Warranty.
  • World Free Shipping & Returns

Join the Discord Discussion

Talk with DISCORD

Want an expert opinion?

Talk with Our Team

Follow us on official Twitter

Follow us on Twitter
  • This is the latest version of 300B output tube amp from Yaqin. Based on the previous version of MS-300B amp, MS-300C adds the external bias adjustment of 300B tubes and removes the speaker/earphone selecting switch on the rear panel.
  • Two 300B king tubes, pure Class A, and single-end integrated amplifier;
  • Tube rectifying and choke filtrations;
  • High DC voltage delay circuit to protect tubes;
  • Gold plated tube sockets;
  • Front headphone output for direct earphone listening;
  • Infrared remote control for volume adjustment and input selections;
  • Utilises the audiophile capacitors and high quality metal precision resistors dedicated for audio frequency;
  • Output transformers manufactured with Japanese silicon steel sheet and oxygen-free enamelled copper and high quality lacquer, which offer a wide dynamic range at full rated output;
  • Applies motor driven special potentiometer as volume controller with low noise, and durable and remote controllable;
  • Employs DC filaments power supply for 300B tubes to minimize humming noise;
  • Beautiful aluminium and steel heavy duty chassis, faceplate and bezels.


Shipping Fees

Worldwide Free Shipping on SHENZHENAUDIO, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.

If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.

Which Couriers To Use?

Given the amount of shipping partners we work with and the vast coverage area we serve, there are likely regions with much longer transit times than others. If you have any feedback, suggestions, or problems with the courier of your shipment, please feel free to submit a support ticket via the "Contact Us" button below.

Our goal is to provide our customers with the best shipping experience possible at a reasonable cost. This is why we constantly negotiate with existing shipping partners for lower rates and actively test new couriers for potential opportunities.

PO boxes or APO/FPO

The ability to ship to PO boxes or an APO/FPO address depends on the item's weight. If an item weighs more than 9 pounds, we won’t be able to ship to these addresses because of our current courier agreements.

To determine if your order is eligible for shipment to PO boxes or an APO/FPO address, please contact SHENZHENAUDIO Support.

Estimated Delivery Time

For customers in the continental United States:
5 to 14 business days from the date of shipping

For customers in Hawaii and Puerto Rico:
2 to 4 weeks from the date of shipping
International customers can expect longer shipping times, depending on the country in which they live:

Canada: 1 to 3 weeks from the date of shipping
Australia, New Zealand, Germany, France, and the UK: 2 to 4 weeks from the date of shipping
Other countries not listed above: 3 to 6 weeks from the date of shipping

Please keep in mind that these are rough estimates and shipments can be delayed due to unforeseen circumstances, like postal strikes or severe weather.

If, for some reason, you don’t receive your order within the estimated time frame provided above and suspect that it might be lost in transit, please submit a support ticket from your transactions page and we can look into the order with the courier. Lost-in-transit requests must be submitted to SHENZHENAUDIO Support within 4 months of the date of shipping or before the courier archives the tracking information.

Easy 30-Day Return Policy

If you are dissatisfied with your purchase for any reason, you may return it to SHENZHENAUDIO within 30 days of the received date, subject to the conditions and exclusions below.

Eligibility Conditions

Please read conditions below. If all conditions are not met, SHENZHENAUDIO reserves the right to refuse the return. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. SHENZHENAUDIO can only refund the original purchase price. Shipping and handling fees are nonrefundable.

Defective or Damaged Items

Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.


Depending on where you live, the time it may take for your exchanged product to reach you, may vary. Please allow 3-5 business days for mail-in exchanges to be processed.

Refunds & Credits

Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase. Please note: we can only refund the original purchase price. Shipping and handling fees are nonrefundable.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.


To return your product, you should mail your product to: 4F 405, Building F, No.2 Shangxue Science and Technology North, Bantian Street, Longgang Dist, ShenZhen, 518129 Guangdong, China

If you’ve done all of this and you still have not received your refund yet, please contact us at support@shenzhenaudio.com.

Tube: 300B × 2 (Output Tubes)
           6N8P × 2 (Drivers and Cathode followers)
           12AT7 × 2 (Voltage amplifiers)
            5Z3P × l (Rectifier)
Maximum Output: 9.5W × 2 (8Ω)
Output Jacks: Two channels with two groups of gold plated jacks
                        Headphone jack on the front panel

Speaker Output: Impedance: 4Ω and 8Ω
Headphone Output: Impedance: 32Ω (Recommended)
Input Jacks: Four groups of gold plated isolated RCA jacks
Input Sensitivity: 0.3V
Distortion of Harmonic Wave: ≤1% (at 4W)
Frequency Response: 5Hz ~ 35KHz (-2dB)
Signal-to-Noise Ratio: >89dB (A weight)
Remote Controller: Infrared control and powered by 2 AAA batteries
Supply Voltage: AC 115V 60Hz
Power Consumption: 200W
Net Weight: 23kg (50lb)
Net Dimension: 48cm (W) x 36cm (D) x 24cm (H)
Shipping Weight: 28kg (61lb)
Shipping Dimension: 60cm x 50cm x 40cm


A YAQIN MS-300C unit
A Power cable
A Remote control
Hex screw drivers to mount the cover cage and to adjust bias