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Headphone Amplifier Corvette

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Description

Corvette is a high end pure class A DIY tube headphone amplifier kit designed for the highest quality music reproduction with the minimum distortion. An essential part of any good sounding headphones is the amplifier that is driving them. Corvette is capable of driving a wide range of headphones and it will give you the best advantage in listening pleasure. The most immediately noticeable quality of Corvette is its silent background, nearly totally devoid of hiss. With a pair of matched Electro Harmonix 6922 tubes, the sound Corvette produces is balanced, closer to neutral, with a quick bass. Bass lines are staccato, the mid lines are wonderfully transparent and nicely recorded vocals like Alison Krauss and Vienna Teng hung in midair clearly separated from the bass guitar, which in turn is perfectly separated from the guitar accompaniment. Highs are buttery smooth. There is never a feeling of harshness, fuzz, or artificial detail up top. That is not to say Corvette is not detailed. Corvette is detailed, it just presents details in a way that is very non-etched. Another way to describe this is that the detail never stands out and announces itself. Rather, the detail works to make a vocal or instrument seem more present in the room, and more focused.

Do not compare this tube amplifier with the ones made somewhere in Asia from counterfeit parts and using low voltage Wal-Mart switching power supplies. Corvette uses only the finest audiophile quality components that have been carefully selected with no expense spared. Corvette uses two 6922 tubes for their linearity and low distortion. (You also can roll in 6N1P or 6H23P tubes). The 6922 tubes are matched with an aid of Amplitrex tube tester and a computer. High quality Kemet, WIMA, Nichicon capacitors are used along with an audio grade ALPS volume potentiometer. Military grade Vishay/Dale metal film resistors used throughout the kit. A high quality built in dual bus power supply Doubloon with ultra low noise characteristics delivers anode and filament voltages and a very generous amount of post and pre regulation smoothing capacitance provided by Nichicon and Kemet capacitors. The kit is assembled on a Canadian made printed circuit board that has thickness of 1.75 millimeters and 2 Oz copper traces. You have a choice of purchasing a transformless amplifier kit or a kit that includes filament 182H9 and B+ 182D110 transformers. The transformers are manufactured in Waterloo, Canada and are designed for both 120V and 240V power arrangements.

Headphone amplifier kit Corvette is shipped the same business day it is purchased via Canada Post Express with a tracking number.

Headphone Amplifier Corvette  
 
 
 
 
 
 
 
             
Headphone Amplifier Corvette PCB   Headphone Amplifier Corvette Parts   6922 Tubes Headphone Amplifier Corvette    
             
6922 Tubes Headphone Amplifier Corvette   6922 Tubes Headphone Amplifier Corvette   6922 Tubes Headphone Amplifier Corvette    
             
Corvette   Corvette   Corvette    
             
Corvette   Corvette   Corvette    
             
Corvette   Corvette   Corvette    
             
Corvette User Manual            
 
             
Corvette Video

Specifications of Single End Pure Class A OTL Headphone Amplifier Corvette

  • Frequency Response

  • Headphone Impedance Range

  • Input Impedance

  • Output Impedance

  • Total Harmonic Distortion

  • Power Consumption (Anode)

  • Power Consumption (Filament)

  • Signal to noise ratio

  • Crosstalk between left and right channels

  • Maximum Output Power vs. Impudence

10Hz - 250 KHz (-1dB)

30 Ohm - 600 Ohm

100 KOhm

85 Ohm

< 0.001%@1KHz

12W@250 Volt

5W@6.3 Volt

105 dBa

- 92 dB

150 mW@30 Ohm
250 mW@60 Ohm
300 mW@100 Ohm
280 mW@200 Ohm
250 mW@300 Ohm
220 mW@400 Ohm
200 mW@500 Ohm
180 mW@600 Ohm

Component Selection of Single End Pure Class A OTL Headphone Amplifier Kit Corvette

  • Tubes

  • Volume Potentiometer

  • Resistors

  • Input Coupling Capacitors

  • Interstage Coupling Capacitors

  • Output Coupling Capacitors

  • Decoupling Capacitors

  • Feedback Grounding Capacitors

  • PSU Pulse Suppression Capacitors (Anode)

  • PSU Pulse Suppression Capacitors (Filament)

  • PSU Pre-Regulator Capacitors (Anode)

  • PSU Post-Regulator Capacitors (Anode)

  • PSU Pre-Regulator Capacitors (Filament)

  • PSU Post-Regulator Capacitors (Filaments)

  • PSU Voltage Regulator (Anode)

  • PSU Voltage Regulator (Filament)

Two Matched Electro Harmonix 6922 (you can also roll in 6N1P, 6H23P)

ALPS RK27 also known as Blue Velvet

Vishay/Dale Metal Film

WIMA 1 Microfarad

WIMA 1 Microfarad

WIMA 1 Microfarad

Nichicon 100 Microfarad

Nichicon Muse Audio Grade 100 Microfarad

Four WIMA 0.047 Microfarad MKP-X2

Four WIMA 0.047 Microfarad MKP-X2

Three Nichicon 100 Microfarad and One Kemet 0.22 Microfarad

One Nichicon 100 Microfarad and One Kemet 0.22 Microfarad

Three Nichicon 1000 Microfarad and One Kemet 0.22 Microfarad

One Nichicon 1000 Microfarad and One Kemet 0.22 Microfarad

MOSFET IRF840

LD1084V

 

 
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