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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.
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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).
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Sun Audio SV-2A3 Stereo Power Amplifier Kit

Sold out
$2,999.00

Sold out
$2,999.00

Details

The Sun Audio SV-2A3 is a high-fidelity, single-ended triode (SET) amplifier kit, designed for audiophiles who appreciate both the art of DIY assembly and the unparalleled musicality of the legendary 2A3 tube.

This is a kit, not a finished product. It includes all necessary components for assembly, including Tamura transformers, chassis, and premium-quality parts, but requires soldering and technical knowledge to complete.

Pure 2A3 SET Sound – A True Audiophile Experience

The 2A3 triode is revered for its warm, natural tone, exceptional midrange clarity, and highly immersive presentation. Designed for high-efficiency speakers, the SV-2A3 delivers an intimate, detailed, and emotionally engaging listening experience.

Kit Features & Design
• This is a DIY kit – Assembly required; includes all necessary components. Includes PSVANE 2A3, 6SN7 and 5AR4 tubes.
• Single-Ended 2A3 Triode Design – Produces 3.5W per channel in pure Class A operation.
• Tamura Transformers – Featuring Tamura-made power and output transformers for superior sonic transparency and dynamics.
• Hand-Wired, Point-to-Point Construction – Traditional Japanese craftsmanship designed for sonic purity and reliability.
• Minimalist, High-Purity Circuit – Carefully designed to preserve every nuance of your music with low distortion.
• Tube Rolling Capability – Compatible with various 2A3 tubes, allowing customization of the amplifier’s tonal characteristics.

Specifications
• Circuit Type: Single-Ended Triode (SET), Class A
• All triode tube circuit
• Output Power: 3.5W + 3.5W (at 8Ω)
• Frequency Response: 20Hz – 20kHz (+/-1dB)
• Input Sensitivity: 0.7V for full output
• Input Impedance: 100kΩ
• Output Impedance: 8Ω / 16Ω (selectable)
• Power Consumption: ~75W
• Dimensions: W350 × H195 × D230mm
• Weight: 13kg

This is a Kit – Assembly Required

The Sun Audio SV-2A3 is only available as a DIY kit. It is intended for experienced builders who are comfortable with soldering, circuit assembly, and high-voltage electronics. No finished or pre-assembled version is available.

Sun Audio SV-2A3 Stereo Power Amplifier Kit