New DIY KITS HA-PRO Single-ended Class A transistor Headphone amplifier

Description: New DIY KITS HA-PRO Single-ended Class A transistor Headphone amplifier Notice:This is just DIY KITS.You have to assemble it by yourself.Only for professionals. Parameter:Working voltage: IN AC24V to AC28VGain: 11 timesIQ quiescent current: 33MA *2Working on single-ended: CLASS AS/N ratio >110 DBDistortion <0.015% 20K HZHA-PRO size: 107.5*74MM HA-PRO is a headphone amplifier designed for a variety of high impedance and low impedance.Each stage uses a single-ended circuit working in CLASS A, and the output stage uses a single-ended constant current source circuit.In order to reduce the amplifier input noise, HA-PRO uses ultra-low noise, high HFE signal amplifier tubes BC547C, BC557C. HA-PRO uses ON TIP41C with better linearity as the output stage in the output stage. It adopts single-ended and constant current source working mode.Both the output tube and the constant current tube adopt TIP41C. The working current is 60MA, so that HA-PRO can have good driving performance.As TIP41C has a higher working current, the temperature is higher. Be careful not to get scalded.HA-PRO uses 2A relay to ensure minimal current loss. For those who like ALPS 27 potentiometer, you can replace it with ALPS27 potentiometer. There is a space on the PCB that can be upgraded to an ALPS 27 potentiometer. Package:1pcs New DIY KITS HA-PRO Single-ended Class A transistor Headphone amplifier Payment DetailsWe only accept Paypal Payment.We will send the item to you as soon as you won and paid. Delivery DetailsWe provide standard shipping to international via China Post airmail or Hongkong Post airmail with tracking number.Contact us if not receive items.We only ship to the approved address given in Paypal Payment.Please make sure payment address in Paypal is correct.Any non-received items caused by invalid address registered on Paypal are not in our full refund or replacement policy. Returns and ReplacementsWe accept returns and replacements within 30 days from the day the cutomer receive the products.Please make first contact within 30 days from receiving the order.Products should be returned in original condition. About FeedbackWe will try our best to solve any dispute and satisfy our customers.Please contact us firstly if you have any problems.As you know,a negative feedback can deal nothing and the positive feedback is very important for us.So we hope to your understanding.And we will appreciate if you would like to contact us for solving your problems well.Thanks!

Price: 21.78 USD

Location: 武汉市

End Time: 2024-12-27T07:47:58.000Z

Shipping Cost: 4 USD