LaChapell Audio 583E 500 Series Vacuum Tube Preamp/EQ

The Model 583E features the same amplifier stage found on the LaChapell Model 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 setting 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.

Specifications

• Internal Gain: 0 to >70dB
• THD+N: < 0.25%
• Frequency Response: 12Hz to 70kHz
• Maximum Output: +26dBu
• Noise/E.I.N.: -120dB
• Input Impedance: 1.5kohm (mic) & 40kohm (Hi-Z)
• Tube Compliment: (1) ECC83
• Total Weight: 3.5lbs.
• EQ Section: 3-band EQ with fully sweeping frequency control; fixed 'Q' value of 1 with very low phase deviation.
• Input/Output Type: Transformer-less; ultra clean with minimal harmonicsignature
• Input: 40k
• Output: 50ohm
• Bands: Low 30Hz~400Hz, Mid 325Hz~5kHz, High 2.5kHz~20kHz
• Cut/Boost: +/- 8dB
• Max Input: +24dBu
• Max Output: +26dBu
• Self Noise: -93dB
• THD+N: 0.012% (with +8dBu input signal)