The Audio Note (UK) OTO Integrated Amplifier is a highly regarded amplifier known for its exceptional performance. It is a Pure Class A amplifier, and is available in both push-pull and single-ended versions. The Push-Pull versions are classified as Level 1, and they use a pair of output devices for each channel, which allows for more power and greater efficiency. The Single-Ended versions, on the other hand, are classified as Level 2, and they use only one output device per channel, which allows for a more direct and uncompromised signal path.

The Audio Note (UK) OTO SE (Single Ended) models are designed to offer the highest level of sonic performance possible, and they are optimized for pure Class A operation.

The OTO SE models are designed with a focus on neutral and realistic sonic reproduction. This is achieved through careful part selection and meticulous attention to detail during the manufacturing process. Every component in the amplifier is chosen for its sonic qualities, and the circuit design is optimized to ensure that the signal is faithfully reproduced without any added coloration or distortion. The OTO SE models meet all of Audio Note (UK) Level 2 criteria, which is a set of standards that Audio Note uses to ensure the highest level of performance from their products.

The Audio Note (UK) OTO SE is also available with an integrated phono stage, which makes it a great choice for vinyl enthusiasts who want a high-quality amplifier that can handle their turntable setup.