Avalon U5 Mono Instrument DI Preamp

Msrp: $845.00 / Savings: $85.00

0% Interest for 6 Months**

On Purchases of $199 or more with your Sam Ash credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required.

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0% Interest for 6 Months

On select purchases $199 or more with your Sam Ash card now thru 06/13/21.

On Purchases of $199 or more with your Sam Ash credit card.* Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required. Note: Your first order with your Sam Ash Credit Card can only be shipped to the billing address on your application.


*Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo purchase if you pay the promo purchase amount in full within 6 months. If you do not, interest will be charged on the promo purchase from the purchase date. Depending on purchase amount, promotion length and payment allocation, the required minimum monthly payments may or may not pay off purchase by end of promotional period. Regular account terms apply to non-promotional purchases and, after promotion ends, to promotional balance. For new accounts: Purchase APR is 29.99%; Minimum Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval. We reserve the right to discontinue or alter the terms of this offer at any time.


Qualifying items must be purchased at the advertised tagged prices. This offer is not valid for price matches, competitor coupon matches, used or previously marked down items, closeout gear or door busters.

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Sam Ash Gear Shield Extended Service Plans

Maximum Protection at Minimal Cost

2 and 3 Year "No Hassle" Extended Warranty Coverage to repair or even replace* your gear so you won't miss a beat!


  • Covers new and used gear
  • No Lemon Policy
  • 100% Parts and Labor Coverage
  • No Out Of Pocket Expenses or Hidden Fees
  • Transferable if you sell or give away your gear
  • Free shipping should you need a repair

Get The Best Back Back Up For Your Gear:

  • Power surge failures from day one: COVERED!
  • Wooden cracks in acoustic guitars: COVERED!
  • Defects to guitar headstocks, necks or bodies: COVERED!
  • Cracked wooden drumshells: COVERED!
  • Mechanical breakdowns due to normal wear and tear: COVERED!
  • Electrical breakdowns due to normal wear and tear: COVERED!
  • Commercial use: COVERED!

*Replacement for new products costing less than $500. Download the full terms and conditions here

The U5 high-voltage DI-preamp combines a unique passive tone selector with a variable gain preamp and filter. The high input impedance accepts a wide variety of signal levels and instruments from acoustic guitars to high-output active bass guitars and keyboards. The U5 direct box is loaded with sonic character and user features professionals demand.

    •  Pure Class A, 100% discrete design
    •  Smooth musical detail and sonic excellence
    •  Variable gain preamp to +30dB.
    •  Dual microphone and line outputs
    •  Hi-Z   3,000,000 ohm input impedance
    •  Very low noise -100dB
    •  High headroom +30dB
    •  Six tone bank selections.
    •  DC coupled Class A output for superior bass
    •  High cut switch eliminates noise
    •  LED active signal indicator
    •  Headphone monitor output jack
    •  Low distortion less than 0.5% THD and IMD
    •  High level 400 watt speaker input
    •  Active to thru selector - ground isolation switch
    •  100% discrete power supplies for audio path
    •  Internal toroidal power supply for low noise
    •  Long lasting, stainless steel hardware

The Avalon U5 Pure Class A instrument DI & preamplifier is the most powerful direct box available today.  Designed to optimize absolute signal integrity and musical performance, the U5 includes many features and sonic excellence unequaled by lesser designs. The U5 is ideal for bass guitar and acoustic instruments, electric guitars, keyboards, synthesizers and low output pickups. 

Features include state-of-the-art, high input impedance input stage for zero load effect on sensitive pickups and keyboards, 100% discrete, Pure Class A signal amplifiers, practical user features and rugged hardware designed to deliver true high performance audio for many years. 

Avalon U5 DI-preamps have been in use around the world since 1995. They have found their way into the world's leading musicians rigs and recording sessions and been featured on thousands of the best selling (and sounding) albums and live performances.

The U5 includes a variable gain Class A preamplifier to boost low level pickup signals and a high level speaker input for capturing the live sound of the instruments amplifier. Six passive tone-EQ curves are also included to enhance a variety of acoustic and electric instruments. A high-cut switch eliminates unwanted acoustic pickup and high frequency noise, while a  headphone monitor amp has been included for personal listening. Twin DC coupled Class A output amplifiers drive both low level microphone preamp inputs and high level +4dB inputs for direct to tape recording or processing. The active-to-thru switch selects either the instrument input directly or sends the boosted-equalized signal to the amplifier via the front panel jack. A ground isolation switch eliminates any possible earth loop or AC buzz problems with complete safety.


    •  Circuit Topology: 100% discrete, high-voltage Class A 
    •  Gain: Switched 3dB steps, maximum gain +30dB 
    •  Input Impedance: 3,000,000 ohm unbalanced (single ended) 
    •  Maximum Input Level: +24dBu unbalanced, 400w speaker input 
    •  Output Connectors (2): XLR type, pin 2 hot electronic balanced 
    •  Maximum Output Level (Class A): +30dBu DC coupled, balanced 600 ohms (mic and line out) 
    •  Headphone Output: 0.5w into 600 ohms 
    •  Noise 20kHz Unweighted: -100dBu minimum gain position 
    •  Distortion THD, IMD: 0.1% at +10dB 
    •  Frequency Response, -/+0.5dB: 5Hz to 100kHz 
    •  Frequency Response, -3dB: 1Hz to 500kHz (input band limited) 
    •  High Cut Filter: -3dB at 8kHz minimum phase design 
    •  Tone Selector: Six position rotary switch, all passive filters 
    •  AC Power: Internal toroidal AC supply 
    •  Dimensions: 8.5 x 3.5 x 12 in (216 x 88 x 305mm) 
    •  Weight-Packed: 12lbs (5.4kg) 
    •  Optional Rack mount kit (1) RM-1: Single U5 19 inch rack mount kit (holds one half rack unit) 
    •  Optional Rack mount kit (2) RM-2: Dual U5 19 inch rack mount kit (holds two half rack units)

Things You Will Get:

  • Instrument DI Preamp
  • Manual
  • Power Cable
  • Model Number U-5
    Model U5
    Series DI Series
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