Both of these aspects ensure excellent system matching. They also have very low output impedance and can run long interconnects. The C-Cores bring a level of detail and authority across the entire spectrum and increase definition, authority and high frequency detail, bringing an incredible accuracy and realism to the music. The triple C-Core transformers at the output of the 5.1 signature ensure the highest quality transfer of the analog signal to your pre-amplifer or intergated amplifier. We firnly believe that your high end vinyl system will have trouble keeping up. The results are staggering dynamics that most audiophiles will have never experienced. The SHUNT design in this unregulated power supply enables the ultimate dynamics and detail, instantaneous current supplies are available to the ever changing analog signal running through the system. Thus each tube on the output stage has its own dedicated HT path. The overall design of the power supply incorporates three substantial chokes supplying two separate HT voltages, one for the 12AU7 input stage, and one for the ECC99 output stage. This 5U4G variant is a powerful valve more commonly found in 300B amplifiers and there is plenty of NOS choices for this position. In the DAC 5.1 signature we start by having two separate mains transformers one dedicated strictly to the HT voltages that power the line stage, the other supplies our new super regulation board and the line stage DC filaments.Īt the heart of the power supply is the new WE274B (replica) rectifier tube. Demanding audiophiles know that power supply design is absolutely critical for the ultimate in sonic performance. Takman Non-magnetic Metal Film Resistors.This DAC in a smaller footprint with 6×4 rectification, IV transformers, Digital board, 6922 tube output stage makes for an incredible DAC platform for DIYers world wide! Specifications Output Tubes The 6×4 power supply we developed for the L1 DAC and L1 Phono uses the 6×4 7 pin rectifier tube which is baby brother of the 6X5 used in the M2 power supply found in our L2-L4 products. The line stage sounds very undigital and has a lovely natural sound. There are many 6922 tubes available, many being classic 50’s new old stock. An efficient and effective line stage to compliment the digital and power supply sections of the DAC 1.1. The 6922 output board has Takman non-magnetic film resistors and Audio Note Tin Foil Capacitors. I/V Transformers are used to maximize the energy transfer during the Current-to-Voltage phase of the conversion resulting in increased dynamics. Our I/V transformers were specially designed by Audio Note Engineering to provide an affordable yet highly effective transformer for the DAC 4.1. The method is perfect in its simplicity and is reflected in the sound quality. Rather than using feedback loops and high frequency oversampling clocks to produce an ‘approximation’ of the digital data as Delta-Sigma types, an R-2R DAC will turn on each required bit in the digital ‘word’ and the exact amount of current will flow from the chip to reconstruct the analog waveform. Delta-Sigma DACs and R-2R resistor ladder DACs are quite different. Using the Audio Note DAC strategy calls for a Resistor Ladder DAC architecture as opposed to the more common Delta-Sigma computer processing style DAC. R-2R v Delta-Sigma – Things to be aware of when choosing an audiophile level DAC
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