Connect with us

Hi, what are you looking for?

Bookshelf Speakers

T.H.E. Show 2022: Common Wave Hi-Fi & OJAS Shelf Horn Mod Kit

The OJAS Shelf Horn Mod Kit package is not inexpensive at $5,500 plus stands but driven by the Audio Hungary A50i Integrated Amplifier was quite the performance.

Ojas Shelf Horn Mod Kit Loudspeaker Stereo System

I have been following Devon Turnbull, the owner of OJAS speakers on Instagram for years; his speakers are truly works of art in their simple elegance, build, color, and his integration of horns. They have also always been out of reach for me financially — until now. The OJAS Shelf Horn Mod Kit offers a degree of hope for listeners like myself who are focused on affordable vintage amplifiers and want to use loudspeakers like the OJAS at home.

A number of years ago, OJAS started offering a bookshelf model. One that could be produced in non “one off” numbers. It was also offered as a kit; I have a lot of experience building amplifier kits and fixing vintage loudspeakers but building my own speaker from parts would be something new.

Ojas Loudspeaker

The original OJAS featured a 16″ x 14” x 12.5” loudspeaker cabinet and a JBL 328C single full range driver. What further impressed me was the 96 dB speaker sensitivity which allows you to run these speakers with as little as 3 watts of power; which also made them ideal for vintage receivers and tube amplifiers.

The kits and models that are already assembled have been offered for sale on Devon’s OJAS website; demand for the products has often resulted in long waits and there have been gaps in the availability.

Ojas Shelf Horn Mod Kit Loudspeaker

The most recent offering is the OJAS Shelf Horn Mod Kit; the kit allows users to redirect the top end of the range to the horns and can be installed with some basic soldering and drilling.

Common Wave Hi-Fi is a Los Angeles-based dealer with 3 rooms at T.H.E. Show 2022 including an excellent setup with the new DeVore Fidelity O/baby loudspeakers. Their OJAS setup wasn’t fully ready when I stopped by but I’m glad that I took the time to return on Saturday.

Common Wave had the OJAS loudspeakers on display ($5,500 USD) on CW Custom stands ($1,100 USD).

Ojas Shelf Horn Mod Kit Top

They may be small in size but Devon recommends a minimum of 8 feet between the listener and loudspeakers.

Powering the loudspeakers was an Audio Hungary Qualiton A50i Tube Integrated Amplifier ; a 50 watts/channel class A design that uses 4 KT120 output tubes to deliver all of that power. The A50i is manufactured in Hungary and retails for $9,250 USD.

Digital sources included Innuos digital music servers and the the Merason Frerot DAC which retails for $1,475 USD and can also be ordered with an external power supply for an additional $950 USD. The Frerot is a 24-bit/192kHz PCM DAC and offers five digital inputs; 2 S/PDIF, 2 Toslink Optical, and 1 USB. It also offers single ended and balanced outputs.

Ojas Loudspeaker Model 328c Badge

Common Wave also had two Technics 1210 MK2 turntables in use connected to a Varia Instruments RDM40 Rotary Mixer ($3,800 USD).

Advertisement. Scroll to continue reading.

I was very impressed with the openness and immediacy of the sound; the room was definitely too small for the scale that loudspeaker is capable of reproducing. The loudspeaker clearly doesn’t need the 50 watts of power that were driving them; one could certainly use a low powered tube amplifier with these loudspeakers.

I’m super tempted.

For more information: OJAS NYC



  1. Thomas Rainer Schäfer

    April 11, 2023 at 1:14 pm

    Totally overprized 320$ unit. And not a m2 plywood. Every morning a fool wakes up. Find him.😜😜😜

    • Ian White

      April 11, 2023 at 1:45 pm


      I’m not sure why anyone would buy this over the DeVore o/baby.

      Ian White

Leave a Reply

Your email address will not be published. Required fields are marked *


New Products

McIntosh MB25 Bluetooth Receiver/Transmitter with vintage unit stacked

Digital Music Systems

Designed to add Bluetooth streaming to any Hi-Fi system and facilitate streaming of any source to a pair of Bluetooth headphones, the McIntosh MB25...

SilentPower LAN iPurifier Pro Rear SilentPower LAN iPurifier Pro Rear

New Products

For $299, the SilentPower LAN iPurifier Pro promises to prevent interferences coming through an ethernet cable from reaching audio devices.

Michael Fidler SPARTAN 30 headphone and line pre-amplifier Angle Michael Fidler SPARTAN 30 headphone and line pre-amplifier Angle

Headphone Amps

At $600, SPARTAN 30 promises low distortion volume control for use with active speakers or headphones.

BenQ TK710STi Gaming Projector Front BenQ TK710STi Gaming Projector Front

New Products

Priced at $1,799 or $1,999, BenQ offers gamers new laser projectors that are nearly identical. Find out which one is right for you.

REL Classic 99 Subwoofer Lifestyle REL Classic 99 Subwoofer Lifestyle

New Products

The REL Classic 99 subwoofer carries on the vintage design of the previously released Classic 98 but with a larger 12-inch driver and increased...

FiiO SR11 Digital Music Streamer FiiO SR11 Digital Music Streamer

Digital Music Systems

The SR11 joins the K11 DAC and headphone amp to create a powerful, compact sound system at an affordable price point. WiiM rival for...

You May Also Like

New Products

In collaboration with Devon Turnbull, the Denon DL-103o moving coil phono cartridge contains a DL-103R in a stylish clear case.


Standing only 28-inches tall, the Q Acoustics M40 micro-towers soar over the wireless speaker competition priced under $1,000.

Floorstanding Speakers

The top-of-the-line Atlantic Technology 8600i Series includes a new tower and center channel speaker for home theater or stereo listening.

Floorstanding Speakers

Sun Audio offers new approach to audiophile system building. Bring your own crossover, amplifier and customize all settings.


In 2024, our favorite mid-tier budget friendly floorstanding loudspeakers are from Q Acoustics, DALI, Magnepan, Wharfedale and Zu Audio.

Floorstanding Speakers

One of Focal's most successful loudspeaker ranges is getting a massive refresh for 2024. The Aria Evo X Series are making a huge splash...


For those with deep pockets, this $25,000 system featuring the DeVore Fidelity O/baby and Unison Research Simply 845 puts almost everything I heard at...

Floorstanding Speakers

Can this $7,499 USD flagship loudspeaker live up to the hype? Acoustic Energy's Corinium Loudspeaker did not disappoint at CAF 2023.


ecoustics is a hi-fi and music magazine offering product reviews, podcasts, news and advice for aspiring audiophiles, home theater enthusiasts and headphone hipsters. Read more

Copyright © 1999-2024 ecoustics | Disclaimer: We may earn a commission when you buy through links on our site.

SVS Bluesound PSB Speakers NAD Cambridge Audio Q Acoustics Denon Marantz Focal Naim Audio RSL Speakers