Luxury & Precision's Circuit Technology x Pure Japanese Vacuum Tubes Rewrite History
To commemorate the 10th anniversary of the LUXURY&PRECISION brand, the high-power portable vacuum tube amplifier "EA4" will be released after approximately two years of development. *The 99 units of the EA4 Limited worldwide will be available for pre-order and sale at Fujiya Avic in Nakano.
Many unique features brought about by discrete designs provide industry-first personalization, complementing all connection compatibilities.
🔹Finely tuned tube preamp circuit to supply high voltage to the vacuum tube anode 🔹Precise and ideal constant current source with discrete configuration 🔹Combinable dual ILA/ILH modes and four types of adjustments for two-stage gain input/output stages 🔹12 Panasonic film capacitors used for vacuum tube preamp coupling 🔹Special linear regulator optimized for vacuum tube resonant frequency 🔹CNC machined metal dual shield and protective cover equipped on vacuum tubes 🔹Vibration suppression design: Eight high-damping silicone buffers on both sides 🔹Improved band characteristics with two independent high-power positive and negative power supplies 🔹16 Nichicon 10x12.5mm audio-grade aluminum electrolytic capacitors used for power filtering in the discrete headphone amplifier circuit 🔹Headphone amplifier power supply voltage selectable between ±13V and ±15V 🔹Equipped with six Panasonic 18650 low internal resistance battery cells 🔹Internal resistance difference between cells adjusted to less than 0.5 milliohms 🔹Eight TO252 package power transistors used in the discrete headphone amplifier circuit 🔹Low temperature drift alloy used for emitters of large transistors, with 24 250mW/0.5% precision resistors 🔹Switchable from Class AB to Class A, with 11 levels of adjustable static current 🔹Switchable between pure vacuum tube preamplifier mode and vacuum tube preamplifier + discrete mode 🔹Volume design and control potentiometer surpass those of the LP6Ti 7Anv while maintaining its essence 🔹Balanced output for each channel is 6800mW at 32Ω and 1200mW at 300Ω
🔶Special Article "History of Development - The Evolution of EA4 to a New Dimension" is available here
