When choosing the ‘66 many things needed to be considered. Firstly the quality, then the price point – it’s very easy to get caught up in ‘this is better than that’ scenario. But when it comes down to purchasing the valve of your choice, it is fundamentally quality that’s important for most people. So choosing this one was really easy – it delivers on all counts. Not only does it sound excellent, it is not hugely expensive compared with some of it’s competitors or new old stock. Yes – we know it is not an exact replica of the original, but it comes so close in audio quality it makes the task of choice simple. Therefore we recommend Brimar thermionic products’ KT66 in almost any fidelity amplification setting. We sincerely hope you enjoy the same experience.