Garage
Shop

1977 Pontiac Firebird

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 1977 Pontiac Firebird

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Loading...
Filters

We are sorry, no available results!

filter-icon Filters & Sort

Cerwin Vega HS102D

800W Peak (200W RMS) 10" HED Series Dual 2-ohm Shallow Subwoofer

HS102D big
Go to item page Right Arrow Icon of Right Arrow

800W Peak (200W RMS) 10" HED Series Dual 2-ohm Shallow Subwoofer

• Peak Power: 800 watts
• RMS Power: 200 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Treated Foam Surround
• Mount depth: 3.54"
• Sensitivity: 83.1 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $119.99
-17% $99.99

In stock

Stinger SGW991

9 Conductor Speedwire 100ft Roll

SGW991 big
Go to item page Right Arrow Icon of Right Arrow

9 Conductor Speedwire 100ft Roll

• 9 Conductor 18 Gauge Speaker Wire
• Nine Cables In One
• Flexible Jacketing • Ideal For 4-Channel Amplifiers
• Easy Installation

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

13
List price $199.00
-56% $88.00

In stock

• 9 Conductor 18 Gauge Speaker Wire
• Nine Cables In One
• Flexible Jacketing • Ideal For 4-Channel Amplifiers
• Easy Installation

NVX - Worth the Envy - Direct to Consumer Car Audio
Limited time!

Deaf Bonce Apocalypse ATOM-500.2 PRO

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

ATOM-500.2 PRO big
Go to item page Right Arrow Icon of Right Arrow

500W RMS Class D Apocalypse Atom Pro Series 2-Channel Car Amplifier

• 231 watts x 2 channel @ 4 ohm
• 390 watts x 2 channel @ 2 ohm
• 500 watts x 2 channel @ 1 ohm
• Bridged: 780 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

Save 30% on an NVX XKIT42 Amp Kit with Purchase!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $18.99 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$189.90

In stock

Only 2 Left!


Available Deal
ATOM-500.2 PRO main
Offer may end without notice

Eligible items

Shop items below for 30% off up to $100 discount on an NVX XKIT42 Amp Kit

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

$76.99

$33 Savings!

Add to cart

NVX XAPK4

Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Amplifier Power Wiring Kit with Speaker Wire for Amplifiers up to 1500 Watts

XAPK4 big
Go to item page Right Arrow Icon of Right Arrow

Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Amplifier Power Wiring Kit with Speaker Wire for Amplifiers up to 1500 Watts

• 4 Gauge Power Amplifier Installation Kit
• For Amplifiers Up To 1500 Watts RMS
• 100% (OFC) Oxygen Free Copper
• Tinned conductors for corrosion resistance
• Pre-terminated seamless power and ground ring terminals
• ANL/Mini-ANL Fuse Holder with 100 amp fuse
• CEA-2015 and BC5W2 Compliant

3+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

78
List price $131.99
-24% $99.99

In stock

Continue to cart

Available Offers (3) for NVX XAPK4
15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20
Used from: $75.99

JL Audio JD400/4

400W RMS Class D JD Series 4 Channel Car Amplifier

JD400/4 big
Go to item page Right Arrow Icon of Right Arrow

400W RMS Class D JD Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $30.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

34
$299.99

In stock

Continue to cart

Available Offers (2) for JL Audio JD400/4
FREE Belva Amp Kit at Checkout!
Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
Used from: $254.99

Metra 44-UA20 Antenna

Replacement Amplified Hide-Away Antenna

44-UA20 big
Go to item page Right Arrow Icon of Right Arrow

Replacement Amplified Hide-Away Antenna

• Replacement Amplified Hide-Away Antenna for AM/FM Bands
• Active Magnetic-Type Antenna
• Works on the Magnetic Field

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Universal Icon
Universal – fits most vehicles.
Shop similar products or Update vehicle
19
List price $76.99
-57% $32.99

In stock

Only 3 Left!

• Replacement Amplified Hide-Away Antenna for AM/FM Bands
• Active Magnetic-Type Antenna
• Works on the Magnetic Field

Limited time!

Kicker 47QL7R122

4800W Peak (2400W RMS) Loaded Quad 12" Vented Enclosure

47QL7R122 big
Go to item page Right Arrow Icon of Right Arrow

4800W Peak (2400W RMS) Loaded Quad 12" Vented Enclosure

• Ported enclosure with 4 12" Solo-Baric L7R Series Subwoofer
• 2400 watts RMS (4800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 28" L x 20-1/4" H x 35-7/8" W

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $1599.99
Save $400.03
-25% $1,199.96

In stock

Limited time!

NVX XWS1650

50 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

XWS1650 big
Go to item page Right Arrow Icon of Right Arrow

50 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

37
List price $39.99
-25% $29.99

In stock

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Limited time!

NVX XW4BK20

20 ft 4-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (Black)

XW4BK20 big
Go to item page Right Arrow Icon of Right Arrow

20 ft 4-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (Black)

• 20 feet 4 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Black

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

9
$54.99

In stock

XS Power D3100

3000W 872 Ah Absorbent Glass Mat (AGM) Car Battery

D3100 big
Go to item page Right Arrow Icon of Right Arrow

3000W 872 Ah Absorbent Glass Mat (AGM) Car Battery

• 12-volt Absorbent Glass Mat (AGM) Car Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4000W audio stereo systems
• Compatible with many Domestic and Japanese vehicles

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

28
List price $549.99
-9% $499.99

In stock

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

MDFD12 big
Go to item page Right Arrow Icon of Right Arrow

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

121
List price $119.99
-17% $99.99

In stock

Like New from: $101.99

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

Limited time!

NVX VBTERM2

Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

VBTERM2 big
Go to item page Right Arrow Icon of Right Arrow

Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
3
List price $9.99
-50% $4.99

In stock

• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

JBL BassPro 12

Single Loaded 12" Ported Amplified Subwoofer Enclosure with Bass Remote

JBLBassPro 12 big
Go to item page Right Arrow Icon of Right Arrow

Single Loaded 12" Ported Amplified Subwoofer Enclosure with Bass Remote

• 12" Amplified Loaded Subwoofer System
• 150 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $36.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $419.95
-13% $364.95

In stock

Used from: $255.46

Stinger SPT522

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

SPT522 big
Go to item page Right Arrow Icon of Right Arrow

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

• Gauge Reducer Adapter
• 4 Gauge Input to 8 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Chrome Plating

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

24
List price $19.00
-47% $9.99

In stock

• Gauge Reducer Adapter
• 4 Gauge Input to 8 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Chrome Plating

BOYO Vision VTSR100

Rear Parking Assist System with 4 Parking Sensors (Silver)

VTSR100 big
Go to item page Right Arrow Icon of Right Arrow

Rear Parking Assist System with 4 Parking Sensors (Silver)

• Rear parking sensors with waterproof connectors
• Audible buzzer with volume adjustment
• Total Number of Sensors: 4
• Detection Distance: 1 feet to 5.9 feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $71.00
-10% $63.90

In stock

Only 2 Left!

• Rear parking sensors with waterproof connectors
• Audible buzzer with volume adjustment
• Total Number of Sensors: 4
• Detection Distance: 1 feet to 5.9 feet

Metra 109-UN02 Universal Dashkit for DMHWC6600NEX

Required to install a new Pioneer DMH-WC6600NEX (Additional Specifc-fit Dashkit Required)

109-UN02 big
Go to item page Right Arrow Icon of Right Arrow

Required to install a new Pioneer DMH-WC6600NEX (Additional Specifc-fit Dashkit Required)

• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $103.99
-39% $62.99

In stock

• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

JL Audio MMC-2Y

2-way Y-splitter for MediaMaster remote controllers

MMC-2Y big
Go to item page Right Arrow Icon of Right Arrow

2-way Y-splitter for MediaMaster remote controllers

• Use to connect multiple MediaMaster Remote Controllers
• 2-way Y-splitter

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$34.99

In stock

Only 1 Left!

• Use to connect multiple MediaMaster Remote Controllers
• 2-way Y-splitter

DS18 LC-DRM

180W Water-Resistant High-Power Digital LED Lights Bluetooth Controller

LC-DRM big
Go to item page Right Arrow Icon of Right Arrow

180W Water-Resistant High-Power Digital LED Lights Bluetooth Controller

• Digital LED lights Bluetooth controller
• IOS and Android Compatible via DS18 LC App
• Bluetooth supports 100 ft. range
• IP66 marine rated; withstands harsh environment

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $9.60 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $115.99
-17% $95.95

In stock

Only 3 Left!

• Digital LED lights Bluetooth controller
• IOS and Android Compatible via DS18 LC App
• Bluetooth supports 100 ft. range
• IP66 marine rated; withstands harsh environment

Rockford Fosgate Prime R2 R2-500X4

500W RMS Class D Prime Series 4 Channel Car Amplifier

R2-500X4 big
Go to item page Right Arrow Icon of Right Arrow

500W RMS Class D Prime Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $36.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

10
$359.99

In stock

Continue to cart

Available Offers (2) for Rockford Fosgate Prime R2 R2-500X4
FREE Belva Amp Kit at Checkout!
Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
Used from: $305.99
Limited time!

NVX NE101P

Single 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo

NE101P big
Go to item page Right Arrow Icon of Right Arrow

Single 10" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.5 Cu. Ft. with Polyfil and NVX Logo

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.50 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

39
List price $101.99
-17% $84.99

In stock

NVX - Worth the Envy - Direct to Consumer Car Audio

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 1977 Firebird

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1977 Pontiac Firebird?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your Firebird.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    1977 Pontiac Firebird

    1978 GMC Caballero

    1977 Ford Courier

    1992 GMC P6500

    1976 Audi Fox

    1974 Mazda Mizer

    2008 Land Rover Range Rover

    1993 Isuzu Stylus

    2003 Audi A6

    1999 Lincoln Continental

    Vehicle
    Store
    Delete

    2015 Can-Am Commander 1000 XT-P

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.