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 6 AM – 7 PM PT
SAT 6 AM – 6 PM PT
SUN 8 AM – 5 PM PT
Holiday Hours:
Thanksgiving: Closed
Christmas Eve Hours: 6 AM PT – 3 PM PT
Christmas Day: Closed
New Year’s Eve: 6 AM PT – 4 PM PT
New Year’s Day: Closed
This season, gift now & pay later with 
Get Details
Open-Box QSC GXD 4 Professional Power Amplifier Condition 1 - Mint
true true
Musician's Friend Rewards
This oversized item has special shipping requirements
Open-Box QSC GXD 4 Professional Power Amplifier Condition 1 - Mint
Oops!
- Free Shipping
- Flexible Financing
- Lowest Price
Gold Coverage Protection
Protect your gear
Gold Coverage Protection
Gold Coverage goes above and beyond the manufacturer's warranty to protect your gear from unexpected breakdowns, accidental damage from handling and failures. This plan covers your product for one, two, three or up to five years from your date of purchase, costs just pennies per day and gives you a complete "no-worry" solution for protecting your investment.
Gold Coverage Includes:
- Unexpected and unintentional spills, drops and cracks
- Normal wear and tear
- Power surges
- Dust, internal heat and humidity
Other plan features include:
- For products over $200, No Lemon Policy applies. If it fails for the same defect 3 times, it is replaced on the 4th breakdown. (Does not apply to failures due to drops, spills, and cracks)
- For products under $200 experiencing the above failures, a Musician's Friend gift card will be issued for the full price of the product + tax.
- Shipping fees covered if required for repair or replacement
- Plans are transferable in the event merchandise is sold
- Plans are renewable on new gear
*Limitations and exclusions apply. See terms and conditions (Opens in new window) for program details
Term for New Gear begins on date of purchase but does not replace the store return policy or manufacturer coverage.
New addition to the QSC power amp line.
Features
- High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.
- Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4 and 8 Ohm speaker systems.
- Class D output stage with a universal power supply for high performance and efficiency.
- Extensive and powerful loudspeaker processing built in. Includes high and low-pass filters, 4-band parameteric EQ, limiting, and delay.
- Large LCD display simplifies amplifier setup and indicates amp status.
- Inputs: Parallel XLR and 1/4 TRS connectors for compatibility with any source while providing convenient loop-thru capability.
- Precision rotary encoders for gain and DSP parameter control.
- Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.
- Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive.
- Adjustable speaker protection to match your loudspeaker' power and impedance.
- Front panel LEDs indicate signal presence, input overload, and amplifier clipping.
Lots of power, completely reliable. Order today.
GXD 4 Professional Power Amplifier Specifications:
- 8 Ohms dynamic, both channels driven: 600 watts
- 4 Ohms dynamic, both channels driven:: 800 watts
- 8 Ohms continuous, both channels driven: 400 watts
- 4 Ohms continuous, both channels driven: 600 watts
- Distortion (typical)
- 1 kHz at full rated power: < 1% THD:
- Signal to Noise (A weighted, 20 Hz“20 kHz): 100 dB
- Input Sensitivity: 1.2 Vrms
- Maximum Voltage Gain: 33.5 dB
- Output Circuitry: Class D
- Power Requirements: 1/8 power at 4Î
- - 100 V AC: 3.4 A
- - 120 V AC: 2.9 A
- - 230 V AC: 1.6 A
- Frequency Response (20 Hz“20 kHz): +0.7 dB, -0.8 dB
- Dynamic Headroom (4 Ohms): 1.25 dB
- Damping Factor (8 Ohms): 100
- Input Impedance: 20 kÎ (balanced), 10 k Ohms (unbalanced)
- Maximum Input Level: +23.5 dBu
- Input Connectors (each channel): 3-pin XLR/F / 1/4" TRS, balanced
- Output Connectors (each channel): NL4, binding posts
- NL4 pinout:
- Channel A on 1+, 1-; Channel B on 2+, 2-
- Channel B on 1+, 1-
- Amplifier and Load Protection: Short circuit, open circuit, thermal, RF protection
- Load protected against DC faults
- Front Panel Controls and Indicators: 2 — Rotary Encoders
- 3 — Operational buttons (HOME, ENTER, EXIT)
- 2 — Green Signal LEDs indicate signal presence
- 2 — Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping
- Blue Power LED ring indicates AC on
- 2.12" — 1.0", 256 — 128 pixel LCD
- DSP Functions: High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 20 Hz to 4 kHz
- Low-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 60 Hz to 4 kHz
- 4-band parametric EQ with variable frequency, gain, and bandwidth
- Peak limiter with power, aggressiveness, and impedance selection
- Delay 50 msec max.
- Dimensions (HWD): 3.5" (2 RU) — 19" — 10.2" (89 mm — 483 mm — 259 mm)
- Weight (Net): 11.3 lb (5.1 kg)
- Weight - Shipping: 15.4 lb (7.0 kg)
- Agency Approvals: UL, CE, RoHS/WEEE compliant
- Carton and Contents: Power cable and quick start guide
Questions & Answers
Do you have questions about this product?
- 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.
Musician's Friend Support