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KingRex T20U Amplifier
with on-board DAC

Special Edition upgrade also available >

Considering the price of this beautifully designed and machined USB DAC/Amp, you'd be mad to buy a soundcard for your computer. Initially, just add a £1.99 USB lead and speakers for a musical experience so much more satisfying than a PCI card and the boom-tizz sat/sub monstrosities that have too long blighted our desktops.

Measuring about the size of a hardback book, this lovingly crafted and compact convergent device delivers mellifluous musicality even in its 'base' specification, with a sound quality more akin to classic tube amplifiers than shrill transistors.

However, to hear what it's really capable of, the first substantial upgrade to consider is the KingRex PSU which adds weight and authority to the bottom end and dramatically enlarges the soundstage, without compromising any of its delicacy of touch.

A similar step up in terms of dynamics and resolution is afforded by adding one of the matching preamps. All the components used in T20 & T20U are of the highest quality and have been selected through intensive listening sessions – from the PCB itself to the high quality chassis and anodized gold RCA and SP terminals.

“I have given my highest commendation to the KingRex T20 by honoring it with the Blue Moon Award for heart-warming tube sound from a cold-running Class-T amp. The T20U is the same amp, only more truthful to the category of integrated amp by offering a second input via its USB interface. If you fancy listening to music from your computer and upgrading your listening pleasure, simply think of the T20U as the best $245 USB DAC money can buy – and the award-winning Tripath amp comes with it gratis.” – 6 Moons 'Blue Moon' Award winner

“One of the reasons the TA2020 has been such a success with DIYers and audiophiles is its almost valve-like delivery. When called for, music has all the smoothness and delicacy one could wish for, but without any apparent draw backs. Indeed, the T20 reminded me several times of my own restored pair of Quad II amplifiers, but with a little more ooomph and speaker driving ability. Think a well implemented Quad II using premium film/foil coupling capacitors and you're pretty close to how the T20/PSU combination sounds – no mean feat, especially for the price.

My current benchmark for amplifier design remains the sublime GB150D kit from Mr Greg Ball, but the little T20/PSU came pretty close at times to its performance. There's a certain 'magic' to the Tripath sound, something that's very difficult to put into words. I think it comes down to the atmosphere of a piece, and the emotion – music just seems to make more sense from the best of these amps. You are aware of being able to hear 'into' a piece of music, of being present at an 'event', rather than some nice sounding but obvious electronic reproduction of an event. It's an addictive and fascinating listen.

Reviewing the T20 and PSU has been a great deal of fun, and a real ear-opener. For the price the performance really is better than it has any right to be – in fact, I'm still using my samples! It's the proverbial giant-killer, deserves to sell well, and gets my highest thumbs up for sonic performance (providing the KingRex PSU is used). That its performance can also be upgraded at a later date by a few simple modifications only increases its value for money. I'd love to try two units in a 'bi-amping' configuration - I'm sure this would yield even greater levels of high fidelity.
Ignore the relatively low price, and go into this with your ears open and I'm sure you'll come out smiling. It's the kind of component that clearly shows improvements & upgrades elsewhere in your system, providing your speakers are sensitive enough to show these improvements. I'm now firmly hooked on the Tripath sound . . . ”
– TNT Audio


KingRex T20-U tripath amplifier front
KingRex T20-U tripath amplifier rear panel

  • TRIPATH power module TA2020-20
  • 0.03% THD+N@10W 4Ω
    0.1% THD+N@12W 4Ω
    0.18% IHF-IM@1W 4Ω
  • Power output: 22W @4Ω
    10%THD+N, VDD=13.5V
    13W @ 8Ω
    10% THD+N, VDD=13.5V
  • Efficiency:
    88% @12W 8Ω
    81% @20W 4Ω
  • Dynamic Range: 99dB
  • Over current and over temperature protection.
  • Gold RCA and SP terminals.
  • 6mm thick aluminium faceplate and aluminium volume control.
  • Noble potentiometer.
  • Single USB input.
  • DAC: Burr-Brown PCB2702E chip
  • Low pass filter: Burr-Brown OPA2604.
  • DC Servo: Texas Instruments TL072 low noise JFET op amps.
  • Comes with UK switching transformer / power lead.
  • 12 month UK warranty
  • Dimensions: 180 x 140 x 45mm
  • Weight: 2.1kg

* Shipping to the following countries is calculated at the standard EU rate of €30: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Republic of Ireland, Italy, Luxembourg, Netherlands, Poland, Portugal, Slovenia, Spain and Sweden.

* Shipping to the following countries geographically within Europe is calculated at the Worldwide rate of £48: Bosnia, Croatia, Greece, Iceland, Latvia, Lithuania, Lichtenstein, Montenegro, Norway, Romania, Serbia and Switzerland.



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