The Lachapell Audio 583e is a 500 series, single channel vacuum tube preamp.
The 583e features the same amplifier stage found on the 583S including the Jensen JT-115k input transformer coupled with an ultra-clean transformer-less three-band EQ section with fully sweeping frequency controls and cut/boost settings of +/- 8dB. The EQ can run as an integrated EQ serving the preamplifier or separate as its own autonomous module where both units run independently.
True Vacuum Tube Amplifier.Jensen Microphone Input Transformer.Nickel/Alloy Output Transformer.Accessible Tube Section.Integrated OR Independent 3-band EQ.Fully "sweepable" EQ Frequencies.Extremely Low THD+N PerformanceTransformer-less EQ SectionPremium Components
Noise Floor: -95dBTHD+N: 0.012% (@ +4 output)Frequency Response: 10Hz to 10KHz (flat)Cut / Boost Range: +/- 8dBuMax. Input Level: 25dBInput Impedance: 48KInput / Output Type: Transformerless
Manufacturer Part Number : 583e