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$ 580 .00
Your Savings: $ 20 .00 Msrp: $ 600 .00
No interest if paid in full within 18 months Learn more
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Little Labs Monotor 2-Channel Headphone Amplifier

High-quality, compact, multiple-output headphone amp

Product Description

The Little Labs Monotor fills the need for an audiophile headphone amp designed for the working audio engineer - devoid of gimmicks - providing accurate, low fatigue, great sounding source analysis.


  • Dual 1/4” and 3.5mm separately amplified headphone jacks, for no, “where’s that adapter” hook up and partner monitoring.
  • Extensive mono monitoring capability: left plus right, left, right, and even left minus right, for phase check and digital compressed audio file artifact analysis.
  • Internal state of the art super low noise linear voltage regulation, providing audiophile full current/voltage (unlike USB wimp powered headphone amps).
  • Easy input interface for balanced or unbalanced gear.
  • Minimal audiophile (almost completely passive) zen circuit path using a single, truly state of the art active stage per headphone output (0.5Ω output impedance).
  • XLR/TRS combo jack inputs in parallel with TRS jacks for easy in-line monitoring hook up.
  • Stereo mini aux input for talk-back communication or easy portable player hookup.
  • Quality stepped volume attenuator with internal bypass for remote volume control capability.
  • Rack-mountable: Up to 4 Little Labs devices fit in a 1u space.

Product Specifications

Condition New
Chassis Desktop
Channels Dual-Channel
Input Connectors 3.5 mm TRS, 1/4-inch TRS, XLR Combo Jack TRS
Output Connectors 3.5 mm TRS, 1/4-inch TRS

Product Reviews

5 out of 5 stars.
Review Count (6)

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I’m hearing things in my headphones I hadn’t heard before. This little amp really makes my headphones sound powerful with so much great detail in my mixes.

By Jeff W on July 17, 2023

What an amazing mix/reference tool. Ultra clean audio signal, and multiple ways to hear your work, like swapping left for right, or a mono sums.

By Paul F on February 7, 2021

I grabbed the Little Labs Monotor to be my headphone amp out of an Apollo X16. I wasn’t expecting to come to rely on all the settings like I do. It’s amazing to be able to mono both sides separately or flip L/R. It’s really informative for tracking and mixing.

By Mario C on January 29, 2021

Best headphones signal in years. Well worth it!

By Michael B on January 7, 2021

Sounds fantastic and performs exactly as it should!

By Brandt G on November 3, 2020

Bought this and the Neve RNHA to do a comparison. Headphones Senn hd650 with specific eq curve from Sonarworks.

Did a AB test so that I could switch between them quickly and did my best to match the levels. A quick note: At a nice listening level the Little Labs volume was at 11 o'clock while the Neve was at 1 o'clock.

Listened to a mix of classical, Spanish gypsy, all flavors of rock and country, old classic soul and pop. Not much metal or EDM.

The Neve sounded like Never. The Little Labs was clean, crisp, and less forgiving. The transients were defined.

I chose the Little Labs for my use: checking my mixes on phones.

For pure listening I would have chosen the Neve.


By ONLINE12284 on March 18, 2019

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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