Tube MM Phono Stage font b Amplifier b font Board PCBA Ear834 Circuit Vinyl LP Amp
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Tube MM Phono Stage font b Amplifier b font Board PCBA Ear834 Circuit Vinyl LP Amp

Tube MM Phono Stage Amplifier Board PCBA Ear834 Circuit Vinyl LP Amp No Including 12AX7 Tubes RIAA HIFI Audio DIY Free Shipping

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Availability: in stock
Price:  US $96.90 / piece
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Tube MM Phono Stage Amplifier Board PCBA Ear834 Circuit Vinyl LP Amp No Including 12AX7 Tubes (Model No: WMM-PA06K)

This tube MM phono amplifier board adopted ear834 circuit by Britain. Since 1994, EAR834 hit market; it is still continue to produce for sale worldwide. However, its circuit is simple and used common materials; this mm phono amplifier is still extraordinary popular.

Note: the sold item doesn’t include any tubes, only include the MM phono amplifier board as photo showed below.


1. PCB Dimensions: 130mm x 285mm

2. Use the tube: 12ax7 x 3

3. Requirements of transformer secondary voltage:

a) high-voltage Group: AC 230V – 280v, current is greater than 30mA

b) low-voltage: AC 6.3V, currents greater than 2A

Schimatic Diagram

Note: we provide you some items and components for your DIY. If you have enough capablities for circuit-reading, electronical components knowledge, assembling, soldering and problem-solving, you can buy them to enjoy DIY. If not, please don’t buy them. We only provide limit technology support in this individial items itself.

Effect after fixed 12AX7 tubes

Learn more about phono stage amplifier

Phono amplifier is designed for a phono signal amplification while using Turntables amplifier inside for special sound equalization circuit (RIAA) for restoring vinyl, it cannot be used for other purposes.

Method for checking noise sources

After phono player connected with the phono amplifier stage, if there is a significant low-frequency noise, you need to check in which part of the noise. First unplug the phono amplifier input signal cable to disconnect connection between them, if the low-frequency noise disappeared or significantly reduced, that may explain the noise from the phono player; obvious if the same or reduce low frequency noise , the noise it is very likely to put itself caused by phono amplifier.

It may cause a greater frequency noise that no specialized non-standard phono ground wire.

Generally, nonstandard phonograph is a turntable part of music center to cope with this set of sound designed, when external phono amplifier put to ground that could cause a large hum due to the different ground ways.

1. Worldwide Shipping (Except some countries).

2. Orders processed timely within 3~5 business days after the payment verification.

3. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address.

4. The images shown are not the actual item and are for your reference only.

5. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season

6. We supply 4 kinds of shipping services as below

A. Expedited Shipping: DHL, UPS or Fedex. For faster shipping and smooth transaction, we will change the shipping company among them. Estimated Delivery Time: 3~7days

B. Standard Shipping: EMS, eParket (US available) or DHL Global Mail (Germany available only) Estimated Delivery Time: 3~7days

C. Economy Shipping: China Air Post Mail / Parcel, Hongkong Air Post Mail / Parcel, Sweden Post, etc.Estimated Delivery Time: 15~60days

D. Special Routes: Russian Special Route, Estimated Delivery Time: 30~ 40days;

Australian Special Route, Estimated Delivery Time: 10~ 15days;

Import duties, taxes and other customs related charges all are not included into shipping cost . Buyers bear all responsibility for all extra charges incurred (if any).

We will check the item carefully and make sure the quality before shipment. If some unexpected problems happened, please contact us firstly.If it is quality problem, buyer may submit argue within 7days after receiving the item, buyer must provide photos , video and other evidences to seller for identify. Man-made damaged, buyers take full responsibility.

1) .The buyer return us the goods and responsible for return shipping costs; after we receive the goods ,we will send a new product to buyer and pay for the resend shipping cost.

2) .If the goods (total price including shipping is less than 10USD) has quality problems, we will resend a new product in buyer next order; if buyer don’t plan to make a new order in the near term, buyer can pay the resend shipping cost and ask to resend a new product.

3). Due to the taxes problem, buyer refuse to receive the goods, buyer need to be Responsible for freight out and home.

1. One year Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.

2. Defective items MUST BE reported and returned within the warranty period (with the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. You agree to all of the above-listed policies upon ordering on aliexpress.

We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.

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Name Rating Feedback
Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $96.90 / piece
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