Linear USB

£850.00
  • Compatible with most headphones
  • Internal USB DAC (16bit/48kHz)
  • Black or Silver face plate

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How To Buy

As UK distributors for the brands we represent, our main focus is to give you all the information you need to help assist with your purchase. Once you have the information you need, we want to make the purchase process as simple as possible. So we give you up-to three options on how to buy our products.

Find Your Local Retailer

Our preferred option is for you to visit a nearby store and buy what you need locally. Our authorised stockists are some of the finest specialist hi-fi retailers in the country, and they're equipped to give you the best after-sales and set-up advice possible - all in person. To find your local retailer, either click the 'Buy In-Store' button on your product page for exactly the right recommendation, or head to our comprehensive Where To Buy tool.

Buy Now, Collect Locally

If you want the added convenience of only having to pop-in to store when you know the product you want has arrived, you can use our Click & Collect-style checkout process. With Buy Now, Collect Locally, your purchase takes place online and the product is then delivered direct to your local supporting retailer; ready for you to collect when you're ready. Click here to find out more about Buy Now, Collect Locally.

Buy Now

For smaller items, you can also have the ultimate convenience of purchasing directly through our website. The checkout process is entirely secure, so you can trust your information will be safe - and your desired product will arrive with you as quickly as possible.

Click here for full Terms & Conditions.

The Linear USB built-in DAC is meticulously built with an integrated Burr Brown DAC and separate voltage regulators of highest quality. The USB connector is only used to transport the signal and not as a power supply.

The Linear USB is a high end headphone amplifier that will satisfy even the highest requirements for quality headphone music reproduction.

The selectable gain (0 dB, 10 dB, 20 dB) of the Linear USB effectively optimizes the output level of the zero global feedback Class A output stage. Practically all high quality dynamic headphones available will show their best possible performance. Carefully selected top notch components and a highly sophisticated circuit design guarantee top performance listening pleasure.

For stereo setups consiting of your computer and an additional analog source like a CD player or a turntable with a phono stage the Linear USB is the simplest and most effective active preamp one can think of. You don't even have to care about input switching because the unit detects the USB audio signal automatically!

The faceplate and the massive milled aluminium knob for the smooth running 27 mm ALPS high grade volume control are available in anodized black or silver. If you would like to enquire about the availability of Chrome finish, please Contact Us.

Key Features:

  • Class-A output stage with zero global feedback
  • Excellent sonic performance
  • USB-input for computers  from USB 1.0 and upwards, works with sample rates up to 48kHz
  • Additional analogue input with RCA and 3.5mm jack connectors with loop through
  • Automatic input selection with USB prioritisation
  • Maximum gain selectable up to 20dB for the use with practically all dynamic headphones
  • Double sided audio board layout for optimal parts placement and trace routing
  • Burr Brown audio grade components
  • Only Low-ESR electrolytic capacitors
  • Gold plated RCA audio connectors
  • Highly sophisticated, clean power supply
  • Nonmagnetic case (aluminium)

Technical Data

Input Impedance: 47kΩ 
Maximum Gain: 0dB
10dB
18db
20dB (Switchable) 
Frequency Response: 10Hz (-0.3dB) to 35kHz (-1dB) 
Signal-to-Noise: >95dB at 0dB Gain
THD: <0.001% at 6mW (300Ω)
Channel Separation: >70dB / 10kHz
Output Power: 400 mW (60Ω)
200 mW (300Ω)
Output Impedance: Line-Out: 60Ω
Phones-Out: 5Ω 
Power Consumption: 10W
Connectors (Audio): Neutrik Phone Jacks (6.35mm)
1 x Parallel to Line-Out
1 x Line-Out Muting
Gold-Plated Connectors With Teflon Isolation
Sampling Rate Digital:  Up to 48kHz
Resolution:  16-Bit 
Max. Voltage:  1V eff. 
Dimensions:  110 x 280 x 50mm
Weight: 1500g
Note: We’re constantly updating our website to ensure all our listings are as accurate as possible. However, the images and text on this page can be subject to change without notice, and errors and omissions are excepted.

If you have any questions, please contact us.