API 5500 Dual-Channel Parametric Equalizer
Best professional grade tone shaping for discerning audio engineers.
This dual-channel parametric equalizer offers precise tonal shaping with two classic 550-style EQs in a single rack unit. It enhances versatility for mastering applications, featuring a balanced input, true hardwire bypass with noiseless muting, and an integrated power supply. The entirely discrete signal path utilizes renowned operational amplifiers and a robust output transformer. A key feature is the range control, allowing for finer adjustments by reducing gain steps, making it ideal for complex program material.
$3295.00
Owner Satisfaction
4.7
/ 5
Category Rank
31
/ 314
#31 in Equalizers
Price vs Category Average
+75%
Above average
Channels
Dual-Channel
/ Dual-Channel
Who it's for
- Audio professionals seeking classic analog character and vibrant sound
- Mix engineers desiring an organic, responsive EQ for creative sound shaping
- High-end studios and engineers prioritizing reliability and exact session recall
Who should skip it
- Project studio owners or producers with limited budgets for hardware
- Engineers requiring pristine, uncolored signal processing for critical mastering
- Mastering engineers or sound designers needing precise, constant Q control
Performance breakdown
Tonal Shaping Precision
The range control offers surgical adjustments perfect for delicate mastering tasks.
Signal Path Integrity
Discrete circuitry and classic transformers deliver that signature API punchy warmth.
Build Quality
Rugged 1U chassis feels built to survive decades of studio abuse.
Workflow Efficiency
Intuitive layout makes A/B comparisons and quick adjustments seamless during sessions.
Connectivity Versatility
Balanced XLR and TRS inputs accommodate most professional studio patching setups.
Noise Floor Performance
True hardwire bypass ensures absolute silence when the EQ is disengaged.
Key Specs
Channels
Dual-Channel
Chassis
19-inch Rack-Mount
Rack Spaces
1U
Input Connectors
1/4-inch TRS, Analog XLR
Output Connectors
Analog XLR
EQ Type
Parametric
Solid State circuitry
Input Impedance
600 ohms or more
Know before you buy
The range control allows you to scale the gain steps of the EQ bands. By reducing the gain, you can make much finer, more surgical adjustments, which is particularly useful for mastering or subtle program shaping where standard steps might feel too aggressive.
Yes, it is designed for both. While the precise controls and range switch make it a staple for mastering, the classic API sound and robust build quality make it equally effective for tracking individual instruments or mixing.
No, the API 5500 features an integrated power supply. You can connect it directly to your AC power source using a standard power cable, keeping your rack setup clean and simple.
The true hardwire bypass ensures that when the EQ is switched out, the signal passes through the unit without any coloration or interference from the circuitry. This allows for an honest A/B comparison between your processed and unprocessed signal.
It is more of a character EQ than a transparent one. It utilizes discrete operational amplifiers and a transformer-coupled output, which adds a distinct, musical warmth and punch that many engineers rely on to glue a mix together.
The unit provides both XLR and 1/4-inch TRS inputs for flexibility, but you should only use one input source per channel at a time. It is designed to accommodate different studio setups rather than mixing multiple sources into a single channel.
Still have a question?
Ask Hayley anything about this product before you decide.