97 In stock
Finished PCBA Amplifier Board
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 refer to ear834 circuit and relay out the PCB. we 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
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 tubs
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.
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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 our store.