MATRIX M-STAGE USB DAC iPAD- Amplifier Headphone ClassA Preamp

MATRIX M-STAGE USB DAC iPAD- Amplificateur Casque Préampli ClassA
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MATRIX M-Stage USB - Headphone and Preamp Amplifier

Matrix offers us a well-finished headphone amplifier, which of course offers a headphone output, but also a line output, to be used in pre-amp.
These two outputs are polarized in Class A , guaranteeing a very good restitution.

Both outputs can be used simultaneously.
Two inputs are available and can be selected using a button on the front panel.

The electrical diagram is relatively simple and direct, as input is a PDO Burr Brown OPA2134 followed by the volume potentiometer.
The latter is an ALPS RK27, a superior component.
The amplification part is made from 2 pairs of Class A transistors (BD139 & BD140)

Its new USB interface based on a TI chip TAS1020B and a PCM1793 allows native management of streams up to 24bits / 96Khz.

This interface is compatible with the systems: Microsoft windows7, Vista, XP, 2000, Mac OS X.

Note that this interface is natively recognized and piloted on iPAD.

Under the device, DIP switches allow you to adapt the gain to your headset, from 0 to + 20dB

Characteristics :

  • Input Impedance: 47 kOhm
  • New design for better heat dissipation
  • Frequency Response: 10Hz (-0.3dB) - 35kHz (-1dB)
  • Signal to noise ratio: 95dB @ 0dB
  • Distortion: <0.001% @ 6mW / 300 Ohm
  • Output Power:
    • 200mW / 300 Ohm
    • 400mW / 60 Ohm
  • Output impedance:
    • Line Output: 60 Ohm
    • Headphone Out: 5 Ohm
  • Power supply: AC220V> 15W
  • Dimensions: 280 x 110 x 42mm
  • Weight: 1.5kg

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Average votes
3.0 / 5
1 reviews
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Recu en 2 jours, Cet ampli est fort bien fini. Le potentiometre est agreable sur toute sa course et il n'y a aucun desequilibre audible sur les 2 voies.
Le son est tres "rentre dedans", la scene est plutot frontale je dirais, il y a beaucoup de dynamique, cela conviens tres bien avec le K701, plutot large sur le positionement des plans,et timide sur la dynamique a cause de sa gourmandise en courant.On entends ici et la que cet ampli est plutot descendant dans l'aigu, je ne suis pas du meme avis, pour moi il est straight, bien tendu, par contre sur des casques de moins de 60 ohms, ont sent un embonpoint sur le grave, qui est du surement a un facteur d'amortissement un peu juste, (impedance de sortie casque de +/- 7ohms), bref a reserver uniquement a des casques sup. a 60 ohms.Pour le DAC integré, il est bon,le niveau de sortie est correct mais il réechantillonne tout en 24 bits, ce n'est pas un drame, a noter juste.
Bon achat, a conseiller pour les casques un peu timide en sensibilitée
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