Product Description
NOTE: This is a kit, All parts need you welding and testing.
Size: 121mm * 108mm * 35mm
Job type: Single-ended Class A
Operating voltage: AC 12V-0V-12V
Frequency characteristics: 12Hz ~ 50KHz (+ 0dB, -1dB)
12Hz ~ 120KHz (+ 0dB, -3dB)
Voltage gain: 21dB
SNR:> 101dB
Conversion Rate:> 35V / μS
Quiescent Current: 240mA
Plot:
In 1969, the British engineer tiger Germany (John Linsley Hood) in the "Radio World" published the famous JLH single-ended
Class A power amplifiers, with its simple circuitry to obtain an excellent sense of hearing, for a time resounded through the
north and south, audio imitators countless. The figure is a single-ended Class A power amplifiers to JLH minor changes based
on the CPI and the headphone amplifier circuit diagram, achieved satisfactory results.
Payment
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Delivery details
We only ship to the approved address given in PayPal payment. Please make sure Sound of Teana, was actually so close: HD-8 developed four years ago, In diyaudio.com've been Lively;
Summary:
Through two versions of Perfection, dozens of DIY players comments and suggestions, more than with the theory and practice
of the players and ZERO-ZONE team together to continue to understand the circuit, absorption, improvement, while beyerdynamic
headphones DT series, K501, K601, K701, headphones S-KING HD series performed on machine test real listening, the eventual
adoption of the current version (PRADO) for the infrastructure, with 30MV protection, and tube drive, drive power, control class,
according to the player's statement : large dynamic (full range) without any messy, like a world outside expert to participate meter
race, not only refresh the record also face is not red, out of breath, ease, master-class style, a piece of cake! In the sense of hearing
and control, the driving force leapfrogged original A1.
Machine size: 220mm * 50mm * 191mm (W*H*D)
Works Voltage: AC115V or AC230V (for choose)
1/4W 1% precision metal film resistors
BC high-end filter capacitances,
AUDIOPHILE MKP 4U7 400V 3% precision tinfoil capacitance
Origilal ST MC33078N opamp
Phi BD139 BD140 transistors(The same batch number)
Omron G2R - 2 12V Relay 700MV Protection circuit,7 seconds delay connect function.
Can drive 32-600ohm headset. very suitable for K501 K601 K701 etc
Package include: Finished HD-8-A1-PRO Headphone amplifier machine X 1
NOTE: This is tested OK finished machine.
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.
Terms of sales
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.
We accept return and exchanges when you received the defective items or highly unlikely. Please contact us ASAP to report the problem within 14 days after receiving. After 14 days, we would NOT accept any return and exchanges. We are not focusing on getting more benefits but reputation. The feedback is the most important thing for us. So PLEASE remember that: NEGATIVE AND NETURAL feedback can't solve any problems. Thank you very much for your understanding.
In the unlikely event that a return is request, all returns must include all original items undamaged, in re-saleable condition, all original packaging including manuals, warranty forms, etc. Software sales are not refundable. Shipping and handling fees are not refundable. Buyer is responsible for shipping costs incurred shipping products back.
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