300B Valve Monoblocks. UK. Tube Amplifiers, Tube DAC,s, Power Conditioner's, Cables and Speakers, 300B SET Mono Blocks, DA08SE. Special. Prestige. Monarchy Audio AC Regenerator, Monarchy Audio Tube DAC, Digital Cables, Monarchy Digital Interface Processor, Tyler Accoustics, Speakers, Lowther Drivers, High End at Low cost, Permalloy output transformer for highest energy coupling from the tube to the speaker. (Permalloy output transformers are also made by some other manufacturers for over US$1,000 a pair!), Z11 silicon steel laminates for both the AC transformer and the filter choke (this is the material other tube manufacturers use for their output transformers), Sophisticated output impedance selector switch (in a 4-8-16 Ohm matrix for best speaker matching), The DX series of drive units employ 'state of the art', rare earth magnet technology. The magnet assemblies are extremely light and compact, yet much more powerful than any conventional magnets. Coupled to Lowther's own Hi-Ferric' coil control system, the acceleration and damping factors are increased well beyond anything achieved in the past, even with the extremely large and powerful magnet assemblies for which Lowther has always been renowned. These all-powerful magnet assemblies allow the diaphragms to reach acceleration rates well beyond the capabilities of any conventional magnet system. 8 ohm speech coils are favoured by transistorised amplification owners. 15 ohm speech coils are favoured by valve (tube) amplification owners. 15 ohm speech coils should be used where two units are required in one enclosure.Silver or aluminium speech coils available to order. All components. POA.