SKU: 43825573601

Avalon U5 Microphone Preamplifier (Silver)

Sale price$611.10 Regular price$679.00
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Description

Avalon U5 Microphone Preamplifier (Silver)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. SONIC EXCELLENCE 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

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.

SONIC EXCELLENCE

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.

DESIGNED FOR DEEP & CONTROLLED BASS

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.

MINIMUM SIGNAL PATH DESIGN

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.

Pure Class A, 100% discrete designSmooth musical detail and sonic excellenceVariable gain preamp to +30dB.Dual microphone and line outputsHi-Z 3,000,000 ohm input impedanceVery low noise -100dBHigh headroom +30dBSix tone bank selections.DC coupled Class A output for superior bassHigh cut switch eliminates noiseLED active signal indicatorHeadphone monitor output jackLow distortion less than 0.5% THD and IMDHigh level 400 watt speaker inputActive to thru selector - ground isolation switch100% discrete power supplies for audio pathInternal toroidal power supply for low noiseLong lasting, stainless steel hardware

  • 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)
  • Rack mount kit (1) RM-1: Single U5 19 inch rack mount kit (holds one half rack unit)
  • Rack mount kit (2) RM-2: Dual U5 19 inch rack mount kit (holds two half rack units)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43825573601

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4.6 ★★★★★
Based on 456 reviews
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Product Reviews
J
Verified Purchase
JRTX
Lowell, US
★★★★★ 5
Worked perfectly for me. Sorry I waited so long.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I was clearing a field full of mesquite trees, and my tractor tires were getting destroyed. Mesquite has nasty 3-inch thorns, and I was plugging tires constantly. Eventually, all four tires were flat at the start of each day. These tires had been plugged more than 10 times each. I bought FlatOut Quick Strike and followed the instructions exactly. The pump dispenses about 1 oz per pump, so I put 30 pumps in each tire, and the bottle was mostly empty by the time I finished. Typical with any pump dispenser it was also difficult to get the last bit out of the bottle using the pump. It’s been a week now. One tire has lost about 1 PSI, but the other three are still holding exactly where I set them. Considering how badly these tires were damaged, I’m impressed so far. This is the first time I’ve gone more than a day without dealing with flats in that field.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
D
Verified Purchase
Duncan Souza
Houston, US
★★★★★ 4
Pump is worthless
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
The sealant is good. The gallon pump is a joke. Pump stopped working 4 pumps in. Went and got another replacement pump from automotive store, also broke after 4 pumps. Ended up cleaning out an old Slime bottle and pouring in the flat out sealant in the slime bottle, so I could actually get it in my tires.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 1
There seems to be a chronic problem with the provided dispensing pump.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I looked at online reviews of the product performance and was impressed by its purported ability seal tire punctures. While the product may (or may not) perform well, the provided dispensing pump is pathetically unsuited for the application and it is impossible to clear the pump once the material clogs the small dispensing port. Some of the reviews indicated this but i assumed that they were not very mechanical inclined customers. The product, by design, has particulates, of varying sizes, suspended in the liquid sealant. The port on pump is very small and easily becomes blocked with the sealant and particulates that cannot be cleared; even when following the instructions to do so. It is very irresponsible for the manufacturer to continue selling this item with inevitable relative failure of the pump as this is the only way to get the sealant into a tire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2025
V
Verified Purchase
VT
Massapequa, US
★★★★★ 5
Good for ebike tires
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
Got it for my son’s older ebike that my wife rides now. He kept on popping tubes, maybe because of his weight. Anyhow, I fixed it up for my wife and put some FlatOut in it to prevent flats. Seems to work so far. Got the off road FlatOut for my ebike’s fat tires. Easy to add to the tires. The pump clogs up but it’s easy to clean. I will always add this to all tires moving forward!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
B
Verified Purchase
Brian ward
Louisville, US
★★★★★ 5
Easy to use and works great
Size: 1 Gallon + Tool, Set name: Off-Road Formula
Easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026

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