Leema Acoustics’ recently unveiled Quantum range has seen its first two offerings with the formal launch of Neutron and Graviton amplifiers.
The Quantum amplifiers comprise the Neutron DAC/preamp and Graviton power amp. The new Quantum collection has been designed, engineered and built in the Welshpool factory in Powys, Wales, and overseen by Leema Acoustics’ co-founder and ex-BBC sound engineer, Lee Taylor.
The Neutron is a preamp that distils Leema Acoustics’ near 25-year UK hi-fi manufacturing experience into an audio ‘hub’. Designed to be as transparent as possible, while offering flexibility with 13 inputs, the Neutron introduces Leema Acoustics’ latest circuit designs, featuring reference-standard crosstalk for transparency.
For vinyl enthusiasts, the Neutron offers switchable MM/MC phono stage, based on Leema Acoustics’ proprietary design. The preamp also benefits from an asynchronous ESS 24-bit/192 kHz USB DAC, a dedicated headphone amplifier, plus a Burr-Brown analogue volume control.
The Neutron includes 13 (nameable) inputs: 4x RCA and 1x XLR; 1x MM/MC phono stage; 3x optical; 3x coaxial and 1x USB. Outputs include: fixed-level record; 2x dedicated subwoofer; a dedicated headphone amplifier, plus a 12 V trigger.
The Graviton stereo power amp benefits from a toroidal power supply which gives the Graviton s control over loudspeakers. A Class A/B design, offering 150 watts per channel into 8 ohms and 260 watts into 4 ohms, the Graviton’s high-current topology deploys six output transistors per channel for huge dynamic ability coupled with unforced sonic detail.
The Graviton has a single transformer supply and six matched Toshiba output transistors per channel, allowing current delivery for transient capability and reliability. Dual speaker binding posts are included to allow for bi-wiring, plus line level loop through-outputs for bi-amping.