Studio Headphone Amplifiers

Notes: Clever little valve-based headphone amp from Korg's NuTekt DIY range. Some basic assembly required but no soldering. Fully customisable for advanced users.

Supplier's notes:
The HA-S is a Nutube-equipped DIY Headphone amp kit that will let you enjoy the highest quality audio anywhere. No soldering is required, so even if you are new to the world of DIY, you will be able to assemble the HA-S to add a warm, analog tube-driven signal boost to any sound source in no time! Build your own Headphone amplifier This DIY HA-S kit allows you to build your very own Headphone amplifier in an easy and fun way, without any soldering needed. Not only that, it provides the authentic vacuum tube sound that audiophiles know and love. Built-in Nutube Nutube is a new and revolutionary fully analog vacuum tube developed by KORG INC. and Noritake Itron Corporation. The same as a conventional vacuum tube, Nutube is constructed with an anode, grid and filament, and operates as a complete triode tube, effectively generating the response and same rich harmonic characteristics of conventional vacuum tubes in a more compact, stable and energy-efficient way. The transparent case of the HA-S delivers a glimpse into this technology; allowing the glow of the tube to be visible at all times. Energy efficiency The filament of the Nutube is powered by a DC to DC converter, which consumes less electric current and thus allows for a longer battery life than other vacuum tube equipped amplifiers. The design is so efficient that the HA-S can drive the Nutube with a line voltage of 26 V using only two A4 batteries., for a rich and authentic vacuum tube sound. Sound possibilities The HA-S has a special NFB (Negative Feedback) switch, that allows you to choose from a high fidelity clean and pristine sound, or a warmer, more harmonically rich sound as expected from a vacuum tube. When the NFB switch is OFF, the harmonics present in the Nutube (triode tube) will be amplified to create a sound rich in harmonics, warmth and textures. When the NFB switch is ON, the distortion ratio and frequency characteristics will be modified, creating a really detailed and clean sound. For further sound modification, we have included two OP amp options for the output: the premium audio oriented "MUSES01" and the industry standard NJM4580, both from JRC. These can be easily replaced so even the most purist audiophiles will be able to customize and adapt the sound of their HA-S to heir heart's content. For advanced users who want to customize their amplifier even more, the circuit diagrams are readily available, making it really easy to change discrete components and make your own and unique headphone amp matching your desired tone and performance -, the possibilities are endless!

Notes: Perfect for studios, practice spaces, quiet stages, and more, the HM Series offers everything you need whether it is just splitting a single signal to your band, or more complex headphone distribution.

Whether you need to expand your home studio headphone monitoring capability or add robust cue mix distribution, the affordable HM Series offers the sound quality, reliability, and flexibility you need to expand your setup.

The ultra-compact HM-4 offers a simple yet effective way to split a single stereo signal out into four pairs of headphones. Perfect for quickly splitting a phones mix in the studio or even crowding around a tablet to watch a movie at home.

Excellent Sound Quality:
Premium analog circuitry and design delivers an ultra-low noise floor and high headroom.

Ultra-Flexible:
From a simple yet effective way to split a single stereo signal out to four pairs of headphones to robust headphone distribution, the HM Series offers a wide range of options to suit your needs.

'Built-Like-A-Tank':
With a heavy-gauge steel chassis, long wear potentiometers and switches, the HM Series is built to last.

Notes: Mighty Plug is a complete guitar or bass practice room that can fit in your pocket. Simply plug into your guitar or bass and connect headphones and you can play fully amplified guitar sounds along to your favourite tracks in complete silence. Inside this tiny device is a huge arsenal of amp models for guitar or bass, effects and acoustic models. Bluetooth connectivity lets you pair with a smart phone or tablet (search for "Mighty Plug") for playback of audio to jam to or for in-depth editing of the Mighty Plug amp and effect settings using the Mighty Amp app (downloadable from App Store or Google Play). No need to keep replacing batteries, as the Mighty Plug is rechargeable via the USB, which also serves as a computer interface for firmware updates and as a recording/playback interface. The Mighty Plug contains all you need for hours of practice, recording and sound exploration.

Specifications

Battery: Internal rechargeable LiPo 3.7V, 1000mAh
Input impedance: 1M Ohm
Rated power: 2 x 125mW
Wireless connection: Bluetooth editing or audio playback
USB computer interface: Micro USB audio stream & recharging
Effects: 13 amp models, 20 IR presets, 19 effect models
Dimensions: 81 x 41 x 30mm
Weight: 62g

Notes: Are you and your session players and bandmates tired of straining to hear underpowered headphones? That's why Jim Odom and his jambalaya-fueled team of engineers designed 150 mW headphone amps for the HP4 headphone-distribution system.

These headphone amps are not just loud enough for session and stage use, they're loud enough to explode the oysters in a Po' Boy sandwich. Yet the sound is clear and clean, with a wide dynamic range. At last, everybody will be able to heariassuming they are capable of hearing. Be careful with that level control.

Simplicity is the HP4's hallmark. You get left and right line inputs, left and right line outputs with level control, and the 4 x headphone outs. You can globally mute the headphone outs, adjust the overall headphone level, sum the stereo signals to mono, and mute the rear-panel Monitor outputs.

The HP4 can sit on a tabletop or can be screw-mounted to a standard rack tray (not included), where it requires just 1/3 rackspace. And if your needs grow, you can use the line outputs to feed the inputs of a second HP4 or an HP60. Chain as many headphone systems as you need.

So listen up. Quit struggling with mediocre headphone amps. Get the HP4 and hear everything loud and clear. You owe it to your music.

www.youtube.com/watch?v=GOt3LDMtsFM