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Electrodyne 501 500 Series Microphone Preamp , $925.00 - Add to Cart Skip to Product Information

Electrodyne 501 500 Series Microphone Preamp

500 Series Mic Preamp with Active DI and 2-stage Discrete Transistor, Transformer-coupled Circuitry
Item ID: Electro501
Electrodyne 501 500 Series Microphone Preamp
$ 925 .00
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Electrodyne. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated October 22, 2026

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Electrodyne 501 500 Series Microphone Preamp
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Electrodyne. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated October 22, 2026

$ 925 .00

Electrodyne Is Back!

This article was Written By

Our Product Research Team

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The Electrodyne 501 500 Series Mic Preamp fortifies your rack with great-sounding "Golden Era" technology. Electrodyne consoles juiced some of the hottest hits of the late '60s and early '70s at top studios like Capitol, Warners, Stax, Decca, and Motown. This 2-stage, discrete transistor, transformer-coupled preamp is built. The amp stages are individually optimized using selected original-spec components. The transformers are made by Electrodyne's original manufacturer to exacting factory specs. The onboard active DI circuit presents a nearly immeasurable load to finicky musical instrument outputs. Sweetwater's verdict? You've gotta hear the Electrodyne 501!

Electrodyne 501 500 Series Mic Preamp Features:

  • The transformers are made by Electrodyne's original manufacturer to exacting factory specifications
  • Onboard active DI circuit presents a nearly immeasurable load to sensitive musical instrument outputs
  • Output of the DI circuit is designed to directly connect and interact with the mic input transformer
  • Maximum Gain: 68db. Adjustable over 50db in 2db steps with two ranges using 20db pad
  • Output level control: Infinitely adjustable from 0 (off) to +6db over unity
  • Input impedance: Microphone, 50 / 200 ohms selectable. DI, over 7 megohms
  • Output impedance: 150 ohms
  • Distortion: 0.02%typical over entire gain range
  • Maximum output: +30db at less than 0.8%thd. (+29.5db at 0.06%thd)
  • Frequency response: +/- 0.25db, 10hz to 60khz
  • Signal to noise: -80db typ, -60db at absolute maximum gain
  • Clip indicator: Monitors all three amp stages and illuminates when any stage is 3db from clip

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.