PreSonus ADL600 2 Channel High Voltage Tube Preamp

£1,529.00 RRP £1,749.00 (including VAT @ 20%)

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This item is available to order, and we do not currently have the item in stock.

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"Estimated delivery to you" is our estimate of when we will be able to deliver the product to you, based on our supplier's normal delivery timescales. If we become aware it is going to take significantly longer than normal to deliver this item, we will let you know, otherwise, we will advise by email or text message when the item has been dispatched from our distribution centre.

Estimated delivery to you: 29th December 2016
FREE Delivery available.

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30 day money back guarantee included

30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Optional: 5 year warranty: £76.45
(Includes 90 day money back guarantee)


The product price includes a one year warranty and 30 day money back guarantee.

However, the Gear4music extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.

The highlights of this enhanced warranty service are:

  • Warranty is extended to 5 years from the date of delivery.
  • Our Money Back guarantee is extended from 30 days to 90 days (terms apply after 30 days)
  • Collection and delivery costs are included for the first two years
  • Claim 50% cash back on the cost of the policy after 5 years if it has not been used!
  • Warranty is transferable if the item is re-sold
  • Loan or replacement equipment will be provided if the product isn't repaired within 30 days
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Please note that this extended warranty is currently only available on products sold within the EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.

For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.

This enhanced warranty is in addition to the standard Gear4music and manufacturer warranty policies, and the Gear4music terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.

Product Ref: 50641

  • High-Voltage Class A Dual Transformer Design
  • Selectable Microphone Input Impedance
  • Switched Gain and Variable Fine Trim Controls
  • Microphone, Instrument and Line Inputs
  • Ultra Low Noise (-100dB S/N ratio)

PreSonus ADL600 2 Channel High Voltage Tube Preamp

The ADL 600 by PreSonus is a high voltage 2 channel microphone preamplifier that has been designed by world-renown analog tube circuit designer Anthony DeMaria. The ADL 600 also features a discrete Class A design with three vacuum tubes per channel for maximum headroom and tonality as well as being hand built in the USA.

Product Ref: 50641

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Buy on finance from £41.89 per month Finance from £41.89 per month  

  • 15.9%
  • £53.06
  • £1,910.16
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

View Full Description

PreSonus' ADL 600 contains some of the gratest components in the world including switched attenuators, military-grade vacuum tubes, analog VU and LED meters, custom-designed proprietary transformers, and much more. All of which, when combined, create a warm, smooth and precise sound that is not rivaled.

The ADL 600 by PreSonus was created to provide ultimate sonic performance, and is also simple to use and versatile, thanks to its ability to allow for many types of input sources, which sets it ahead of other preamps. The input selector allows you to select between Hi-Z instrument input, line input, and 4 different microphone impedances for a wide variety of sounds and applications, all adding to the versatility.

The ADL600's High Pass Filter is a rotary switch that has 3 filter settings (40Hz, 80Hz, and 120Hz @ 6dB per octave) for passively and unobtrusively controlling room rumble and low frequency noise. The input gain attenuator is a military-grade rotary switch delivering 5dB step increments and a total preamplifier gain of over 72dB.

The output stage onboard the ADL600 is controlled by a fully variable conductive plastic attenuator that delivers +/- 10dB of fine tune trim adjustment that helps to set the perfect gain structure for the situation. The ADL 600 also includes 48V phantom power and a -20dB pad both controlled by big sturdy military grade switches.


2 input channels, each with:
  • Mic, line, and instrument inputs
  • High-voltage, Class A, dual-transformer, vacuum-tube preamp
  • 3 military-grade vacuum tubes
  • Input-source select
  • Variable mic-input impedance (150, 300, 900, 1,500?)
  • Variable high-pass filter (40, 80, 120 Hz)
  • 8-position Gain switch Variable Trim adjustment for final stage
  • 48V phantom power
  • -20 dB pad
  • Polarity-reverse switch
  • Backlit VU meter (output level) with -6 dB switch (for metering hot signals)
  • > 73 dB of gain
  • 2 unbalanced ¼? instrument inputs (front panel)
  • 2 transformer-balanced XLR line inputs
  • 2 transformer-balanced XLR mic inputs
  • 2 transformer-balanced XLR line outputs
  • 2U 19? rack-mountable, rugged steel chassis
  • Internal power supply with standard IEC connector
  • Chassis-ground link connectors (lift chassis ground)


Input Impedance
  • Microphone : Selectable, 150/300/900/1500 Ohm
  • Balanced Line: 2 k Ohm
  • Instrument: 100 k Ohm
Maximum Input Level
  • Microphone (1500 Ohm, +20 dB Pad out): +5 dBu
  • Microphone (1500 Ohm, +20 dB Pad in): +25 dBu
  • Balanced Line: +30 dBu
  • Instrument: +30 dBu
Gain Range
  • Microphone (1500 Ohm, +20 dB Pad out): 18 dB to 72 dB
  • Balanced Line: -12 dB to 40 dB
  • Instrument: -5 dB to 42 dB
  • Noise Floor (all inputs, minimum gain): -95 dBu (A-weighted)
  • Microphone Equivalent Input Noise (EIN): -125 dBu (A-weighted)
  • Frequency Response: 10 Hz to 45 kHz ±1 dB
  • Maximum Output Level: +23 dBu (@ 0.5 THD+N)
  • Output Impedance: 600 Ohm
  • Tube Complement (per channel): 1-12AT7A, 2-6922
  • Internal supply, standard IEC connector: 115 or 230 VAC / 100W
  • Dimensions: 2U rackmount
  • Height: 3.5"(88.9 mm)
  • Depth: 17" (431.8 mm)
  • Width: 19"(482.6 mm)
  • Weight: 28 lb. (12.7 kg)