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CharterOak SCL1 Stereo Compressor  From CharterOak

One of the cleanest, fastest and most versatile Discrete Compressor Limiters on the market today.



"Experience the Difference"

Sound Pure's 3-Year Warranty

Our Free 3-Year Warranty!
In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free, Sound Pure 3-Year Warranty, which includes PARTS & LABOR. This high-value perk is our way of providing the ultimate in added value to enhance the unique personal touch our small, dedicated team contributes to each purchase.
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Lifetime Support

Free Lifetime Technical Support!
Our small team of dedicated experts is here to help the original purchaser for the lifetime of the product. Why? Because we care about building real relationships with our customers for life and stand behind every product we sell.

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This Product Ships Free!
Products ship from our well-located, climate- and humidity-controlled warehouse absolutely free (inside the continental USA). Low-cost international shipping options exist for most products.
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Contact us for up-to-date delivery estimate.
Payments as low as $61/mo.

What We Think

If you're the type of engineer that wants every piece of hardware to have obvious color that leaves its unique sonic signature on everything that passes through it, you can skip right on to the next piece of gear on our list. If, however, you're looking for a compressor that will glue your mix together, bring up the back wall in a nuanced, musical way, and maintain the stereo width and high-frequency content of your mix, then check out this compressor. It is phenomenal.

- David Barrett, Sound Pure Pro Audio Specialist


This is the cleanest and most musically transparent compressor that we've ever used. We were so blown away by it that we felt compelled to share our experiences with it with the rest of the world. So, we shot it in HD video and posted it to YouTube (if you have the computer power and bandwidth click the HD button to see it in its highest res audio/video). Otherwise, let us know if you would like some better resolution mp3 clips, and we will e-mail them to you.

Charter Oak SCL-1 Compressor - How to Best Compress Acoustic Guitar

Sound Pure showing how to use the beautiful-sounding Charter Oak Acoustics SCL-1 Compressor to make a perfect compressed acoustic guitar mix.

Manufacturer's Description from CharterOak

The Award Nominated, CharterOak SCL-1 Discrete Compressor Limiter will provide a constant output level regardless of input level or frequency, without the familiar pumping and gasping effect that is inherent in most compressors and limiters. 
This can be attributed to the design of the circuit, which combines the features of waveform differentiation and integration. This allows for fast attack times without overcompensation and a release characteristic that is a function of dynamic range and average program level. 
The device achieves this by employing a rectifier circuit that possesses a parabolic average charge curve. The end result of the circuit is a quick release that releases to a continually changing average level, which is determined by the parabolic charge curve of the storage capacitors. 
The CharterOak SCL-1 circuit design is straight forward, and employs NO MAGIC BLACK BOXES OR OTHER WALLET SHRINKING COMPONENTS. All of the components used in the design of the CharterOak SCL-1 are readily available items and are employed in a manner so as to provide plenty of headroom for years of reliable operation. 
The CharterOak SCL-1 is designed to fit any standard 19" rack. The unit may be used as a stereo unit, or as two independent limiters in the dual mode. This feature enables the end user to employ the device in one or two track production applications. 
Do not be afraid to drive the limiter, even with classical music formats. It WILL NOT pump or gasp.
The processor is delivered with a lifetime warranty on all parts and labor and easy access to factory technical support.

About Manufacturer

CharterOak Acoustic Devices is quickly becoming an industry leader for professional quality recording products for today's musicians and audio engineers. Developed in 2002, CharterOak has independent offices in the US, Canada and the UK and is headquartered in the cozy suburbs of Connecticut. CharterOak was founded by producer/engineer, Michael Deming (Lily's, Pernice Brothers, Mike Ireland) from the need to obtain more control with his studio recordings. Our goal is not to emulate the classics of yesterday but to create the classics of tomorrow. Each CharterOak product is assembled & inspected by hand and tested in the studio before they ship to the customer. Sonic integrity, extreme durability, design simplicity, and serviceability are fundamental values upon which all CharterOak products are built. While our product line continues to grow and receive praise, CharterOak will continue to provide hi quality affordable recording device solutions.


Frequency Response: 20Hz-22kHz

Harmonic Distortion: Less then 1% with 20dB of gain reduction @ +20dBm output

Maximum Output: +22 dBm

Signal to Noise Ration: -85dB referenced to +10dBm

Attack Time: Adjustable from 100us to 5ms

Hold Time: Less than 2ms. Unit provides a soft clip. (Less than 3% total harmonic distortion @ 3dB clip)

Release Time: Adjustable from 20ms to 2 seconds

Cross Talk: -90dB

Input Impedance: 600 Ohms balanced

Output Impedance: 600 Ohms balanced

Sync Tracking Control circuits are matched to within less than .25dB over the entire gain reduction range Power Requirements 117VAC or 230 VAC

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