HUM Audio N-CLOSURE 2 Frame and 2 Modules

The Hum Audio N-Closure 2 is a high-end 2-slot analog tube channel strip rack featuring two N-Strips from the acclaimed N-Trophy Analog Console. Designed for professional studios and mobile producers, this modular system delivers the same depth, warmth, and versatility as its larger counterparts – now in a compact, portable format.

Uncompromising Sound Quality

Equipped with discrete preamps, tube optical compression, passive EQ, and a customizable saturation stage, the N-Closure 2 offers exceptional tone shaping with parallel processing and flexible routing. Its look-ahead compressor ensures precise dynamic control, while the ability to bypass the tube circuit preserves tube life when not in use.

Versatile & Studio-Ready

From transparent recording to rich analog coloration, the N-Closure 2 provides the ultimate analog workflow solution. Whether you're in the studio or on the move, it guarantees top-tier recording quality with a vintage-inspired yet modern design.

Key Features:

- Premium Analog Sound – Same sonic character as the flagship N-Trophy console
- High-End Preamps – Jensen JE990-based discrete preamp for unmatched clarity
- Tube Optical Compression – Smooth, musical compression with sidechain options
- Precision EQ – Six-band passive EQ with recallable rotary switches
- Saturation Control – Adjustable THD with asymmetrical & symmetrical options
- Flexible Routing – Parallel processing, AUX sends, stereo linking & more
- Compact & Portable – 2-slot rackmount design for easy integration

Experience the best of analog recording with the Hum Audio N-Closure 2 – where classic warmth meets modern precision.

CHANNEL STRIP:

Top quality Sifam VU Meters with excellent ballistics. A full range of metering points through the channel’s signal path can be selected.

Fully inline design with Mic/Line and Tape inputs for each channel, swappable between main, and rotary faders. Tape Input has an additional 0/+6/+12dB Gain switch.

High-end discrete Mic/Line/Instrument preamp (0dB to +66dB) based on the legendary Jensen JE990, perceived as the best discrete opamp ever designed. N-Trophy’s preamp design is also based on our flagship RP-2 preamp, which proved itself to be one of the best-sounding preamps you can find anywhere. Excellent, vital and musical sound with a lot of details and a sense of „space” for demanding instruments.

Switchable custom made HUM Audio Devices beautifully sounding input transformer.

Tweakable Saturation / THD stage with lots of creative sound shaping possibilities. Choose type between ASYMMETRICAL (Germanium / Silicon) or SYMMETRICAL (Soft / Medium / Hard). Switchable custom made HUM Audio Devices beautifully sounding input transformer.

DRY / WET BLEND knob for channel insert allows for parallel signal processing.

Channel Direct Output with source selector and output level for recording processed, or unprocessed sound.

Channel processing ORDER rotary switch allows to set order of built-in EQ, Compressor and Insert.

Channel Meter Source rotary switch (Preamp Out, Tape In, Channel Out, EQ, Compressor, Gain Reduction).

TUBE OPTICAL Compressor / Limiter: Innovative detection and compression circuits. Variable transition between compression and limiting with a dedicated knob. You can switch off compression, but still drive the tube, or turn off the tube to save its life. – BLEND knob for dry/wet processing. – L/R stereo link between adjacent channels. – Side Chain filter and external KEY input. – AUX 7 & AUX 8 can serve as Compressor sidechain busses, for modern creative compression techniques

Independently switchable passive Low Pass & High Pass filters.

Passive EQ with separate Boost and Cut frequency knobs. Total of 6 bands: HI, MID and LOW. HI and LOW bands can be switched between shelf / peak characteristics. This is an original design of EQ, hard to find anywhere else, and with a special purpose. With gentle overlapping curves for fast and creative sound shaping with lots of musicality.

EQ, HPF and LPF filters use rotary switches, so their settings are easily recallable. Thanks to it multiple channel EQs are perfectly matched to have the same characteristics.

8 mono pre or post-fader AUX SENDS. Adjacent Auxes can be switched in pairs to be stereo sends. In such a situation, left send (1,3,5 & 7) becomes Aux Pan. You have the possibility to independently assign all four pairs between A and B fader. The Center Section is prepared also for outputting cue mix to 4 pairs of musician headphones using AUX sends.

Aux 7 & Aux 8 can serve as global N-Trophy’s sidechain busses, ideal for modern creative mixing techniques. Sidechain busses are available for channel compressors, as well as for the Master Compressor.

Rotary B Fader. Pan & Level pots, with fader flip ability, and SOLO / PFL switch. You can assign B fader to Group 1/2 for additional processing, or to the Main MIX Bus. PAN MODE SWITCH (LR) allows you to pan each channel hard left/right or use the PAN knob. Panning hard that way gives you absolute stereo separation of chosen channels, which benefits in better sound space definition than using only traditional PAN knobs.

Fader A PAN with SOLO SAFE switch, which disables channel from soloing. Routing to MIX Bus and 4 Group pairs.

Classic scribble strip for tracks description with a dry marker.

Highly reliable MUTE, SOLO, PFL, and DAW MODE buttons. Fader and switches control N-Trophy’s analog channel, but in DAW MODE they control the virtual DAW mixer. In DAW MODE analog channel level is automatically set at 0dB (indicated by the yellow diode). SOLO SAFE indication diode for A fader in the channel.

100mm high precision stepped motorized fader, based on fixed resistors. This is an absolutely unique HUM Audio Devices design of ultra-precise, high-resolution stepped analog fader. Up to now, it was impossible to achieve this level of accuracy in analog consoles, using standard analog faders. Our design ensures fader position settings are ideally matched and repeatable through all console channels. It is a fantastic feature for precise stem summing and/or mastering applications.

Classic Flying Fader design is the best-quality solution. We do not use any VCA, which could degrade sound quality. High resolution of DAW automation. N-Trophy’s fader scale exactly matches the Pro Tools scale for user convenience.

Unlike many other analog large format consoles, N-Trophy’s channel strip is 7cm wide, with larger solid machined aluminium knobs and custom-designed fader caps, for the best user experience.

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.