LaChapell Audio Model 583e

500 Series 3-band EQ with a Transformer-isolated Tube Preamp and a Transformerless EQ section
LaChapell Audio Model 583e image 1
LaChapell Audio Model 583e image 1
Sweetwater Savings: $520.00 MSRP: $1,995.00
Special Order
Special-ordered from LaChapell Audio and usually arrives to you within 1-2 weeks. Please note: special orders cannot be canceled or returned.
Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.

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LaChapell Audio Model 583e
Special Order

Two Amazing Modules in One

The Model 583e EQ by LaChapell Audio is a tube preamp and ultra-clean 3-band EQ that features the same impressive Jensen JT-115k transformer-based input stage as that found in the Model 583s. There are two sections in the Model 583e: the preamp section and the EQ section. The preamp section features plenty of character, including the warmth and dynamic range of a 12AX7 tube. Each band of the completely transformerless EQ features a fixed Q with very low phase deviation, offering you completely transparent control over your sound. The EQ also sports a fully sweeping frequency control and a cut/boost range of +/-8dB. And since you can use the Model 583e's preamp and the EQ stages completely independently from one another, you're in complete control over the character, the coloration, and the expression of your audio.

LaChapell Audio Model 583e 500 Series EQ and Preamplifier Features at a Glance:
  • Ultra-clear and phase-coherent transformerless 3-band EQ
  • 12AX7 tube preamplifier with Jensen JT-115k transformer-based input stage
  • EQ input resistance: 40 Kohms
  • EQ output resistance: 50 Kohms
  • EQ bands: Low: 30Hz-40Hz; Mid: 325Hz-5kHz; High: 2.5kHz-20kHz
  • EQ cut/boost: +/-8dB
  • EQ max input: +24dBu
  • EQ max output: +26dBu
  • EQ self-noise: -93dB
  • EQ THD+N: 0.012% (with +8dBu input signal)
  • Preamp gain range 0dB-70dB
  • Preamp THD+N (gain @50dB, 0dBu output): < 0.25
  • Preamp frequency response (-3dB, output favored): 12Hz-70kHz
  • Preamp input impedance (mic) 1.5 Kohms, (hi-Z) 40 Kohms
  • Preamp tube: 1 x 12AX7
  • Total weight: 3.5 lbs.
The LaChapell Audio Model 583e 500 Series EQ and preamplifier put two incredible tools in your 500 Series rack!

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

500 Series Buying Guide
Model 583e User Manual

Tech Specs

Number of Channels 1
Number of Bands 3-band
Tube Yes
Q Type Fixed
Boost/Cut Range ±12
Frequency Response 10Hz-50kHz
Freq Range High 2.5kHz-20kHz
Freq Range Mid 325Hz-5kHz
Freq Range Low 30Hz-400Hz
Manufacturer Part Number 583E

Customer Reviews

Based on 1 review
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This thing has lots of mojo. Acoustic guitars and vocals are very warm pleasing to the ear. And Scott and his company are awesome with customer service. If you're on the fence, just do it. You'll be glad you did.
Music background: Artist
See also: LaChapell Audio, LaChapell Audio 500 Series EQ