• A-Designs NAIL Compressor | Stereo Bus Compressor for Mixing & Mastering

Nail Tube Compressor

Solid state/tube hybrid dual-mono compressor - Infinite sound-shaping possibilities

  • Nail Tube Compressor Nail Tube Compressor Full Size
  • Nail Tube Compressor Nail Tube Compressor Full Size
  • Nail Tube Compressor Nail Tube Compressor Full Size
$2,595.00

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HM2 "Nail" DUAL CHANNEL COMPRESSOR / LIMITER

Solid state/tube hybrid • Infinite sound-shaping possibilities

The A-Designs NAIL is one of the most musical yet transparent compressors ever manufactured. Housing hand-selected tube circuitry and top-shelf components specifically chosen to best compliment and enrich the extended bandwidth of state of the art recording and mixing tools, the Nail is completely at home strapped across the main outs of hardware mixers or breathing analog warmth into DAW setups.

While it has the ability to add character to any sound, it can also control dynamics very subtly in the background; and, unlike most compressors, the NAIL can be hit really hard without having the top end dragged down.

Being able to switch from linked stereo to dual mono makes it a perfect tracking compressor as well; or, on a stereo mix, using dual mono with different settings on each side which can have the effect of making the mix sound wider.

The NAIL’s unique combination of Threshold, Hard Threshold, and Filter allow precise control over the amount of compression, the level at which it will engage, and the frequencies above which it will act. There is no need for a Ratio control – it is continuously self-adjusting in response to program material. With Hard Threshold disengaged, Threshold increases gain reduction (like an LA2A), the attack and release controls don’t do much, and the NAIL becomes a model of simplicity - set its threshold and gain, and let the NAIL work its magic.

A-Designs NAIL HM2 Stereo Bus Compressor

For finer control, Hard Threshold opens up a world of compression-/envelope-shaping possibilities. Like the hard knee of a traditional compressor, Hard Threshold works in conjunction with the Filter - a variable HPF continuously tunable from 8Hz to 250Hz. Once the Hard Threshold is crossed, the NAIL will apply desired compression above the selected frequency and less to the frequencies below, preventing higher-energy bass frequencies from triggering unwanted compression and ducking the entire mix. The Filter can also be used to enhance bottom end for bass-heavy music without throwing the mix’s entire frequency spectrum out of whack, as a multi-band compressor often does.

The HM2’s remaining continuously variable controls - Attack, Release, and Gain - function as expected; however, Attack and Release are dependent on the settings of the Hard Threshold and also respond dynamically to program material, making for a more flexible and musical performance than traditional “once size fits all” attack/release circuits. Other toggleable functions include In/Out for quick A/B comparison; Stereo Link On/Off; and the ability to switch the NAIL’s LED dual metering ladder (chosen for its ultra fast response and the ability to see it clearly from across a dark-lit control room) from Gain Reduction to Level. Another one of the NAIL’s incredibly cool features is its Mix knob, which provides continuously variable control between direct (dry) and compressed signal, enabling you to apply parallel compression to a sub-mix without losing two aux send/return or mixer channels. Having the capacity to easily reduce the amount of compression being applied without changing the settings or sound of the compressor is unbelievably useful – it’s a mystery why more compressors don’t have it.

As its name suggests - whether it’s transparently controlling dynamics while getting tracks into your DAW or hardware recorder, squashing sounds to give them more character, or putting the finishing touches on a final mix….the A-Designs HM2 Compressor Nails it!

Only $2,595.00

Unlike traditional compressors that simply reduce dynamic range, the A-Designs NAIL was designed to give engineers exceptional control over the character and feel of a recording. Whether you're tracking vocals, tightening a bass guitar, adding punch to drums, or finishing a stereo mix, the NAIL delivers musical compression that enhances the source instead of fighting it.

Its unique hybrid design combines analog warmth with modern precision, allowing the compressor to remain transparent when desired or add rich harmonic character when pushed harder. This flexibility makes the NAIL equally comfortable on individual tracks, stereo mix bus duties, and even mastering applications.

Rather than forcing engineers into one particular sound, the NAIL adapts to the music, providing everything from subtle dynamic control to aggressive envelope shaping while preserving clarity, punch, and detail.

One of the NAIL's most innovative features is its Hard Threshold control. Unlike conventional compressors that rely solely on a traditional threshold setting, the NAIL separates the amount of compression from the point at which compression begins.

This unique approach allows engineers to dial in the desired amount of gain reduction first, then determine exactly when that compression engages. The result is exceptionally transparent dynamics control that can tame aggressive peaks without sacrificing the life and energy of the original performance.

Whether you're tracking vocals, controlling transient-heavy drums, or polishing an entire mix, Hard Threshold gives you a level of precision rarely found in traditional analog compressors.

Parallel compression has long been a favorite technique of professional mix engineers because it blends the impact of heavy compression with the natural dynamics of the original performance. Traditionally, this requires additional buses, routing, and careful phase alignment.

The NAIL simplifies the entire process with its continuously variable Mix control. Engineers can blend compressed and uncompressed signals directly from the front panel, making it easy to add punch, sustain, and density while maintaining natural transients and musical dynamics.

This feature is particularly effective on drums, vocals, bass, and stereo mixes, allowing users to achieve polished, professional results in seconds without complicated DAW routing.

Is the NAIL suitable for mastering?

Yes. The NAIL was designed to perform exceptionally well on stereo mix bus processing and mastering while remaining equally capable as a tracking compressor. Its transparent operation and flexible controls make it well suited for final mix enhancement.

What makes the Hard Threshold control different?

Hard Threshold allows engineers to determine when compression begins independently from the amount of gain reduction. This provides far greater flexibility than many traditional compressor designs and makes subtle dynamic control much easier to achieve.

Can the NAIL perform parallel compression?

Absolutely. The built-in Mix control allows compressed and dry signals to be blended directly within the unit, eliminating the need for additional routing or parallel buses.

Can the NAIL be used for tracking?

Yes. The NAIL works beautifully on vocals, bass, drums, guitars, keyboards, acoustic instruments, and stereo sources, while also serving as an outstanding compressor for mix bus and mastering applications.

Is the NAIL a tube compressor?

The NAIL uses a hybrid design that combines tube circuitry with solid-state technology, delivering analog warmth, musical compression, and exceptional control while maintaining low noise and outstanding reliability.

Learn More About The Nail Tube Compressor

Learn more about the Nail Tube Compressor in the following technical articles.
Why Tube Compressors Still Matter in Modern Mixing
Read Article »
What Does It Mean to “Glue” the Mix Together?
Read Article »

Specifications

• Solid state/tube hybrid design combines high performance with rich sound.
• Dual channel with switchable stereo link or dual mono modes.
• Mix control lets you blend wet/dry signal for parallel compression.
• Hard Threshold and Filter let you select amount of compression and frequency (to 250Hz) to prevent mix from being “dragged down” by LF energy.
• Awarded “Mix Certified Hit” by Mix magazine.
• Custom-milled aluminum knobs.
• Custom-milled aluminum faceplate.
• LED Indicators switchable to stereo.
• Gain-reduction switch for meters.
• 2U rackmount.
• Balanced XLR outputs.
• Carling toggle power switch.
• Red jewel power indicator.
• Frequency response: 3Hz – 50Khz • Noise: -89dbu
• Balanced Input: XLR
• Balanced Output: XLR
• Clipping: +20dbu
• Filter: Off – 8Hz (starting point) – 250Hz
• Channel Isolation @1kHz: 90dB
• Variable Ratio: Self adjusting
• Mix (direct/compression): Complete bypass to complete compression
• Power Requirements: 120/230VAC – 23 Watts
• Dimensions: 19” x 3-1/2” x 10” (W-H-D)
• Weight: 10 lbs.
• Shipping weight: 12 lbs.

Videos

HM2 Nail at AES with Tony Shepperd
HM2 Nail at AES with Tony Shepperd
HM2 Nail at AES with Tony Shepperd
Nail Compressor in action
Nail Compressor in action