Description
Description
The Synergy Audio SYN 3.5K is a 3,500-watt monoblock amplifier designed for serious bass enthusiasts, delivering high-current output at 1 ohm and sustained performance in daily drivers or SPL setups.
- Power Output at 1 Ohm: 3500w @ 14.4v — high-current capability into a 1Ω load is ideal for demanding subwoofers and loud bass response.
- Power Output at 2 Ohm: 2600w @ 14.4v — strong performance into a 2Ω load, balancing power with heat and efficiency.
- Power Output at 4 Ohm: 1500w @ 14.4v — suitable for moderately-sized subs with stable, efficient operation.
- Power Output at 1 Ohm (16v): 5025w @ 16v — higher supply voltage yields extra headroom for peak bass demands.
- Frequency Response: 10hz – 250hz — extended low-end reach with control over bass frequencies within this range.
- Signal to Noise Ratio: >85db — maintains low noise so loud bass remains clean and articulate.
- Damping Factor: >200 — improves control of woofer motion for tighter, more precise bass.
- Subsonic Filter: 10hz – 50hz — helps protect drivers from ultra-low frequencies and reduces cone fatigue.
- Low Pass Filter: 35hz – 250hz — shapes the amp’s output to keep bass focused and reduce undesired high-frequency leakage.
- Power & Ground Terminals: (2) 0 GA Power & Ground Terminals — minimizes resistance and voltage drop for high-current bass loads.
- Working Voltage: 16v — specifies the operating supply range used for optimal performance.
- Transformers: 4 Power Transformers — supports robust power delivery and reliability under demanding use.
- PCB Construction: Heavy Duty 2oz printed circuit board — aids current handling and reliability in automotive environments.
- Size: 19.69” L × 9.45” W × 2.44” H — compact footprint suitable for common install spaces in vehicles.
- Heat Sink & Casing: Custom high mass, thermally optimized aluminum heat sink casing — efficient cooling for sustained bass output.
- Connections & Build Quality: Nickel plated locking RCA inputs/outputs; Single 1/0 and 4 gauge nickel plated power and ground inputs; Nickel plated 8 gauge speaker outputs — durable, low-resistance connections for reliable signal and power transfer.
- Mono-Block & Protection: Fully linkable/strappable (Mono-block); Multi-way fully intelligent circuitry for maximum protection — scalable setups with robust, protective operation.
- Input & Gain: Input sensitivity 6V – 200mV; +18dB Remote Gain control with power and clipping indicator lights — flexible tuning and monitoring from the driver seat.
In real builds, the SYN 3.5K shines as the core of a bass-focused system. It provides high-current 1-ohm output for demanding subs, with subsonic and low-pass filters to tailor bass and protect drivers. The four transformers and thermally optimized heat sink support long, high-output sessions, while robust connectors and heavy-gauge terminations keep power delivery efficient in the automotive environment. Remote gain, input sensitivity options, and intelligent protection simplify tuning and reliability, and the fully linkable mono-block design enables scalable, multi-amp configurations without sacrificing protection or performance.


