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Serpent SB4001 500 Series Stereo Buss Compressor , $1,349.00 - Add to Cart Skip to Product Information

Serpent SB4001 500 Series Stereo Buss Compressor

500 Series Stereo Bus Compressor with 6 Ratios, 10 Attack Times, Highpass/Boost/Slope Sidechain Filters, and Grind Mode
Item ID: SB4001
Serpent SB4001 500 Series Stereo Buss Compressor
$150 Price Drop!
Was:
Backordered - More On The Way!

We expect more from Serpent soon. Order today to reserve yours now, risk-free. Estimated October 13, 2026

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Serpent SB4001 500 Series Stereo Buss Compressor
Backordered - More On The Way!

We expect more from Serpent soon. Order today to reserve yours now, risk-free. Estimated October 13, 2026

$150 Price Drop!
Was:

Masterful Stereo Bus Compression

This article was Written By

Our Product Research Team

Get to know them!

Great-sounding stereo bus compression is a must-have. It pumps up your mixes, giving them the glue, punch, weight, authority, and slam factor to stand out from other tracks being broadcast or streamed. If most other engineers are using it (trust us: they are) and you're not, your mix (no matter how good) will sound weak in comparison. So Sweetwater's advice is to have the best-sounding, most versatile bus compressor you can find strapped across your stereo mix bus. Enter the Serpent SB4001 500 Series stereo bus compressor.

Delivers whatever sound you're after

The Serpent SB4001 raises the bar for the 500 Series stereo bus compression. With its Quad VCAs, six ratios, 10 attack times, highpass/boost/slope sidechain filters, Wet/Dry Blend control, external (key) input, classic stepped release settings, classic (A1) and alternate (A2) auto release, and variable Release control, as well as Grind mode (a proprietary tube-style harmonic drive that adds vintage coloration), the SB4001 can deliver whatever sound you're after. Whether clean, dirty, vintage, subtle, or crushed, the SB4001 is sure to be one of the most flexible compressors in your arsenal.

Serpent SB4001 500 Series Stereo Bus Compressor Features:

  • Quad VCAs (for superior dynamic range)
  • Electronically balanced
  • True bypass (relay controlled)
  • Protection from 48-volt phantom power
  • Powder-coated front panel for extra durability
  • Thru-hole main audio path
  • Ratios: 1.5, 2, 4, 6, 8, 10
  • Attack times (stepped): 0.1, 0.3, 1, 3, 5, 10, 15, 20, 25, 30, 40, 50µs
  • Release times (stepped): 0.3, 0.6, 1.2ms, classic auto release (A1), alternate auto release (A2)
  • Release times (variable; engaged by last position on stepped switch): any time from 0.1 sec to 1.2 sec
  • Sidechain filters: 60Hz, 90Hz, 120Hz, Boost mode, Slope mode
  • Wet/Dry Blend (for parallel processing)
  • Grind mode: special valve-style harmonic drive mode that adds vintage coloration
  • External/Key Input accepts balanced or unbalanced inputs (inserted before sidechain filters)
  • Gain (-6dB to +18dB)
  • Premium sealed pots and Grayhill rotary switches
  • All-machined aluminum knobs
  • Handcrafted in Philadelphia, PA

Warranty Info

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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.