Main parameters:
Operating voltage: AC 12V+12V.
Type of work: single-ended class A.
Frequency characteristic: 12HZ~120kHZ (+ 0dBMAH 3dB).
Voltage gain: 21dB.
Signal to noise ratio: > 101dB.
Conversion rate: > 35V/ μ S.
Static current: 120mA.
Magnifying board size: 120x115 mm.
The magnifying board can be used as preamplifier or headphone magnification.
PCB is made of high-grade fiberglass board made of 2MM.
The copper foil of PCB is 2 oz.
The weight of the product is 230g.
Operating voltage: AC 12V+12V.
Type of work: single-ended class A.
Frequency characteristic: 12HZ~120kHZ (+ 0dBMAH 3dB).
Voltage gain: 21dB.
Signal to noise ratio: > 101dB.
Conversion rate: > 35V/ μ S.
Static current: 120mA.
Magnifying board size: 120x115 mm.
The magnifying board can be used as preamplifier or headphone magnification.
PCB is made of high-grade fiberglass board made of 2MM.
The copper foil of PCB is 2 oz.
The weight of the product is 230g.
Circuit design features:
In 1969, John Linsley Hood, a British engineer, published the famous JLH single-ended Class A power amplifier in Radio World. With its simple circuit, it can get excellent hearing, which is resounded all over the country at a time, and countless audio imitators.
In 1969, John Linsley Hood, a British engineer, published the famous JLH single-ended Class A power amplifier in Radio World. With its simple circuit, it can get excellent hearing, which is resounded all over the country at a time, and countless audio imitators.
Package:
1pc JHL Single-ended Class A Dual Channel Headphone AMP Amplifier Finished Board
Delivery Details
We 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 Replacements
We 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 Feedback
We 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.Thanks!
We 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 Replacements
We 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 Feedback
We 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.Thanks!
