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Onix Melody SP3 Tube Integrated Amplifier Review

by April 29, 2006
Onix Melody Tube Integrated Amplifier

Onix Melody Tube Integrated Amplifier

  • Product Name: Melody SP3 Tube Integrated Amplifier
  • Manufacturer: Onix
  • Distributor: AV123
  • Performance Rating: StarStarStarStar
  • Value Rating: StarStarStarStar
  • Review Date: April 29, 2006 19:00
  • MSRP: $ 999

Power Output (8ohms): 38 watts per channel
Frequency Response: 20 Hz to 20,000 Hz
Total Harmonic Distortion (at rated output): 1%
Amplifier Topology: Class AB
S/N Ratio: > 90 dB

Input Sensitivity: 380 mV
Input Impedance: 250 k Ohms
Amplifier Power: 4 or 8 Ohms
Dimensions (HxWxD): 8.1”x11.9”x13.25”
Weight: 56 lbs



  • Smooth treble and warm midrange.
  • Good bass output for power rating.
  • Solid build quality, heavy.
  • At maximum output, sound is still tolerable.
  • All of the sonic advantages of tubes.


  • Bass is not as tightly controlled as with comparable solid-state gear.
  • Roll off in the upper treble.
  • Low wattage limits maximum output.
  • All of the sonic shortcomings of tubes.


Onix Melody SP3 Introduction

AV123 is of a new breed of direct internet retailers. Rather than simply offering common, run of the mill gear at internet discount prices, AV123 offers exclusive products to value conscious consumers who are looking for quality at a good price, and backs those products with customer service and advice not typically offered with the internet based sales model. Direct internet retailing allows them to minimize overhead and markup to provide pricing below what comparable products cost with brick and mortar retailers.

Onix is one of several brands exclusively distributed through AV123, and manufactures both loudspeakers and electronic components, such as CD players and integrated amplifiers, for sale through the site. The Melody SP3 is intended as a high value product aimed at budget minded Hi Fi enthusiasts who dream of esoteric gear but are grounded by simple economics.

The Onix Melody SP3 is actually a product of Melody Valve Hi-Fi Party, Ltd. of Melbourne, Australia. The unit is designed and engineered and in Australia and manufactured in China for Onix Ltd. who then distributes through AV123 exclusively in the United States.

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About the author:

Professionally, David engineers building structures. He is also a musician and audio enthusiast. David gives his perspective about loudspeakers and complex audio topics from his mechanical engineering and HAA Certified Level I training.

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