Best Variable Frequency

BLAUPUNKT AMP4000D 4000W Max 1-CH Monoblock Class D Stereo Car Audio Amplifier

Variable Bass Boost - Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.
Variable Subsonic Filter - To prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
Specs - Dimensions: 15” x 10” x 2.4”, Weight: 11.2 lbs..

Power: 2500 watts max X 1 @1-ohm, 1250 watts max X 1 @2-ohms, 625 watts max X 1 @4-Ohms.
Class D: power loss is significantly reduced making the amplifier highly efficient. Excess energy is stored until it’s needed instead of being converted into heat. Reduction in size/weight, reduced power waste, smaller heat sink, compact circuitry.
1 ohm stable: able to continuously power loads of 1 ohm without encountering difficulties such as overheating. Typically made to power up subwoofers that demand the heavier power load requirements to be able to perform the way they were made to.
Variable subsonic filter: to prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
Variable low-pass crossover: subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.

Specifications: 1-Ohm stable. Mono - block hybrid amplifier. Max power @ 1 ohm: 4800 watts. RMS power @ 1 ohm: 2200 watts. Low levelInput & output. Frequency response: 20hz ~ 250hz.
Input level: 0.2v ~ 6v. Variable subsonic filter: 10hz ~ 50hz. Variable low pass filter: 35hz ~ 250hz. Varaible bass boost: 0 ~ 9db at 45hz. Variable phase shift: 0 ~ 180 degrees.
Remote gain controller. Two amplifiers linkable connector & selector. Fuse ratting: 120a. Linked fuse: 240a. Dimensions: 13.26 length x 6.5 width x 2.25 height.

10 and 12 meter bands. 16 programmable/erasable frequencies. Programmable repeater split..
Large frequency display with dimmer. New backlit display. Dual panel meters..
Improved receiver design for increased sensitivity and image rejections. Receiver clarifier ( plus/minus 0.5kHz)..
Variable output power control. Noise blanker/ANL circuitry. Frequency selector lockout..
Double FET balanced mixer for improved receiver intermodulation rejection. Active frequency scanner. Continuous duty built-in AC power supply..

Five-digit frequency counter with large blue digits, two-digit channel display with larger blue digits. Large Galaxy meter with 4 scales: "S" Meter indicates up to 60 dB over S9. Modulation Percentage Scale for use on AM. Power Scale Calibrated for AM and SSB. SWR Scale.
The Galaxy StarLite faceplate features back lighting of the white faceplate lettering in blue or red color back lighting. All faceplate lettering is white during daylight. The picture shows how the color back lighting turns the lettering blue or red. Frequency and Channel LED digits are always blue - day or night.
Large, easy-to-read meter with scales for power output, modulation, SWR and incoming signal.
Variable power output control, variable talkback circuit with on/off switch, automatic SWR circuit and an SWR alert LED, Roger Beep with on/off switch.
Variable dimmer control with push switch to turn off the meter lamp, display digits and Star Lite back lighting, 3-position tone switch for receive, proprietary Galaxy Noise Filter (GNF) Circuit reduces noise to aid in the recovery of weak SSB signals.

10 and 12 meter bands. 16 programmable/erasable frequencies. Programmable repeater split..
Large frequency display with dimmer. New backlit display. Dual panel meters..
Improved receiver design for increased sensitivity and image rejections. Receiver clarifier ( plus/minus 0.5kHz)..
Variable output power control. Noise blanker/ANL circuitry. Frequency selector lockout..
Double FET balanced mixer for improved receiver intermodulation rejection. Active frequency scanner. Continuous duty built-in AC power supply..

Variable Bass Boost - Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.
Variable Subsonic Filter - To prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
Variable Low Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
Specs - Dimensions: 7.8 x 4.6 x 1.7, Weight: 2.9 lbs..
Warranty - BOSS Audio Systems provides a powerful 6 year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.Com. We strongly encourage professional installation of this product to ensure proper and safe functionality.

Specifications: 1-Ohm stable. Mono - block hybrid amplifier. Max power @ 1 ohm: 4800 watts. RMS power @ 1 ohm: 2200 watts. Low levelInput & output. Frequency response: 20hz ~ 250hz.
Input level: 0.2v ~ 6v. Variable subsonic filter: 10hz ~ 50hz. Variable low pass filter: 35hz ~ 250hz. Varaible bass boost: 0 ~ 9db at 45hz. Variable phase shift: 0 ~ 180 degrees.
Remote gain controller. Two amplifiers linkable connector & selector. Fuse ratting: 120a. Linked fuse: 240a. Dimensions: 13.26 length x 6.5 width x 2.25 height.