Update in response to COVID-19
×

scroll-yellow scroll-yellow

scroll-department scroll-department

scroll-store scroll-store

scroll-canary scroll-canary

logo-ojas
OJAS is the creative pen name of Devon Turnbull. As a university student studying Audio Engineering he started using the name across a variety of disciplines including graffiti, music, graphic design and clothing design. In 2003 Turnbull co-founded the clothing brand Nom de Guerre with Isa Saalabi, Wil Whitney and Holly Harnsongkram. For the next decade, while primarily working in fashion, the name OJAS was kept alive on sound sculptures Turnbull was crafting for himself and a growing number of audio enthusiasts around the world. With a particular interest in high efficiency speakers and low powered tube amplifiers, Ojas audio equipment aims to bring realistic, natural sound to the listener. These products are the result of two decades of experimentation, engineering and explorations in the audio underground.
Devon Ojas Instagram
Shopping Cart[0]
ojas-art

The Nature of Sound


Sound is considered to be of two kinds, one a vibration of ether the other a vibration of air.
The vibration of ether which cannot be perceived in the physical sense, is considered the principle of all manifestation the basis of all substance the “music of the spheres” it forms permanent numerical patterns which are the basis of the worlds existence, this kind of vibration is not caused by physical shock as are audible sounds. It is therefore called anahata “unstruck”, the other kind of sound is an impermanent vibration of air, an image of the ether vibration. It is audible and always produced by a shock. It is therefore called ahata or “struck”.
Struck sound is said to give pleasure. Unstruck sound leads to liberation (Narada Purana).

Ojas 2A3 Single End Triode Power Amplifier

Regular price
$6,000.00
Sale price
$6,000.00

Regular price
$6,000.00
Sale price
$6,000.00

OJTRPLAMP
Shipping calculated at checkout.

Details

3.5 watts per channel into 8 ohms 


10 Hz - 20 kHz +/- <1 dB

17.75” w x 10.25 d x 7” h

50 lb.


The first Single Ended Triode amp I ever built was a 2A3. It seemed like a good entry into SET but I saw it as just that. In the years since I have built, owned and auditioned all of the popular output tubes and topologies: 300B, 211, 845, 45, 811 tubes running in single ended, push pull, parallel, etc. But I always come back to the trusty 2A3. For me, it has plenty of power and a great tonal balance. 


I developed this amplifier in Japan with an associate of Isamu Asano. By now I have had a great deal of experience with his designs. This amp is a grafting together of a few different designs of Asano, taking my favorite aspects of each circuit. 

Ojas 2A3 Single End Triode Power Amplifier
Ojas 2A3 Single End Triode Power Amplifier
Ojas 2A3 Single End Triode Power Amplifier