Why Shop With Us?
Free Shipping
Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
Orders placed before 3 p.m. ET usually ship the same business day.
Learn More2-Year Free Warranty on Guitars
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.
Contact Us for DetailsWe're Here for You
Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.
Contact UsContact Us
Hablamos Español
866.226.2919
Hours:
MON - FRI 5 AM - 8 PM PT
SAT 6 AM - 6 PM PT
SUN 6 AM - 5 PM PT
527 500 Series Compressor/Limiter
false falseWe're sorry-this item is unavailable.
Contact our experts for a recommendation of great alternatives. Call us at 800-449-9128.
Versatile compressor loaded with features.
There is a "SOFT"/"HARD" switch for an "over-easy" type compression resulting in a very natural, uncompressed sound or a typical sharp knee type that lends itself to a much more severe limiting effect.
The Threshold control sets the initial operating parameter. The 527 500 Series Compressor/Limiter can be operated with signal input levels from +10 dBu to -20 dBu.
The 527 features an Output fader control that ranges from minus infinity to +10dB, and output capability is +28 dBu through a 2520 discrete amplifier and a large API output transformer. The output level remains fairly constant regardless of the threshold or ratio control, much like the "more/less" Ceiling control on the API 525 compressor. This allows for live adjustments without any noticeable gain changes in the program level.
The patented THRUST function can be switched in and out via the front panel as well, applying a high pass filter before the RMS detector circuit that preserves that punchy bottom end.
Attack and Release are fully adjustable on the 527. Release time can be adjusted by rotating the inner concentric RELEASE knob. Release time constants: .3 sec to 3 sec. Attack time is adjusted on the outer concentric ATTACK knob, which ranges from 1 millisecond to 25 milliseconds.
The 527 is designed for individual channel use or, through the use of the LINK switch, two units can be combined for Stereo applications via a motherboard bus connection.
The 527 Compressor/Limiter makes use of the 2510 and 2520 Discrete Op-amps and exhibits the reliability, long life and signature sound which are characteristic of API products.
Features
- Audio circuit uses the 2510 and 2520 Discrete Op Amps with transformer output
- Continuously variable detented Threshold control
- Continuously variable detented Attack and Release controls
- Continuously variable detented Ratio control
- Output Fader level control
- 10 segment VU/Gain Reduction meter with selector switch
- Overload LED
- "Link" switch for multiple unit interdependent compression linking
- "New"/"Old" switch for feed-forward or feed-back compression
- "Hard"/"Soft" compression curve knee switch
- Patented THRUST switch for frequency dependent side chain control
- "IN" switch with hard relay bypass when in the "Out" position
For the highest level of flexibility in signal gain control. Order today.
527 500 Series Compressor/Limiter Specifications:
- Input Impedance: High Level In 160 Kohms
- Low Level In 80K ohms
- Output Impedance: High Level Out 85 ohms
- Low Level Out 50 ohms
- Nominal Operating Level: -2dBu or +4dBu
- Maximum Input Level: +26dBu
- Maximum Output Level: +26dBu
- Output Fader Control Gain: -Infinity to +10dB
- Attack Times: 1 millisecond to 25 milliseconds (typical)
- Release Times: 0.3 seconds to 3 seconds (typical)
- Compression Ratios: 1:1 to 1:Infinity
- Threshold Control Range: +10dBu to -20dBu
- Metering:
- 10 RED LED VU scale: -20VU to +3VU (positive illumination
- indicator)
- RED GR scale: -1.5dB to -23dB (negative illumination indicator)
- RED Overload LED: +27dBu (clipping)
- THRUST® Filter Action: -10dB/Decade slope, unity @ 1kHz
- Frequency Response: +/- 1dB 20Hz - 20kHz
- Total Harmonic Distortion: < .2% THD, any level below clipping, any compression setting
- Signal to Noise: Unweighted -100dB below clipping (+26dBu@0.1% distortion, no compression)
- Power Requirements: +/- 15-18VDC @130mA
- Conforms to Automated Processes, Inc. VPR Alliance size and connectorization layout specifications
- This unit is made to install into the 500 Series frame VPR rack, lunchbox or any API
- console with 500 series slots
- Size: 1.5" x 5.25" x 7.5"Actual Weight: 1.75 lb.
- Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
- Orders placed before 3 p.m. ET usually ship the same business day.
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.
Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.