JB SYSTEMS 1U classD amplifier 2x400W 4ohms
Estimated delivery in Italy between 18 and 22 June
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FEATURES
The AMP 400.2 Mk2 is the Mark II version of the well-known JB Systems AMP 400.2 professional power amplifier. It is a 2-channel Class-D amplifier delivering 2 x 250 W RMS into 8 ohms and 2 x 450 W RMS into 4 ohms. Externally, it retains the particularly compact dimensions of the previous model, with a standard 19" rack width and 1 U height (44 mm). Internally, however, the layout has been completely re-engineered to improve reliability and heat dissipation; to this end, three fans are used to maintain controlled temperatures. The design is based on the use of an extremely efficient soft-start switching power supply. It offers three operating modes: stereo, mono, or bridged. Stereo mode is the conventional one where both channels operate separately. Mono mode is essentially identical to stereo mode but with the inputs of both channels linked so that the output will be mono; in this case, only the LEFT channel input can be used to drive both output channels with the same signal. Finally, bridge mode combines the output stages for a power of 900 W into 8 ohms. A peak limiter prevents signal distortion, while a low-cut filter cuts low frequencies at 75 Hz with a very steep 24 dB/oct filter. The input sensitivity is variable between three values: 0.775 V / 1.0 V / 1.44 V to adapt to any source. There is also a rear switch for floating ground.
To prevent unauthorized persons from changing input levels, a plastic cover (included) can be installed with 4 screws over the front controls.
The amplifier's inputs are balanced XLR, there is a link output for connecting another power amplifier in a daisy chain, while the outputs are on speakON connectors. Protections against short circuits, high temperatures, and overloads.
SPECIFICATIONS
| General : Dimensions (cm) | 48.3 x 24 x 4.4 |
|---|---|
| General : Weight (kg) | 4.5 |
| General : Color | black |
| General : Powerinput | AC 240V, 50Hz |
| General : Energy Label | No |
| General : Display | No |
| General : Fixation | 19" rack mountable |
| General : RU | 1U |
| General : IP rating | indoor |
| Audio : frequency range | 20 Hz - 20000 Hz |
| Audio : S/N ratio (> dB) | 100 |
| Audio : max. output channels | 2 |
| Audio : Wrms 4Ω stereo, per channel | 450 |
| Audio : Wrms 8Ω stereo, per channel | 250 |
| Audio : Wrms 8Ω bridge | 900 |
| Audio : functions | adjustable crossover, bridge mode, limiter |
| Connections : input | 3 pin XLR, IEC |
| Connections : output | 3 pin XLR, speakon |
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User Manual
Official technical documentation in PDF format.
About JB SYSTEMS
JB Systems is a Belgian brand specializing in professional lighting equipment, audio systems, special effects, and accessories for DJs and entertainment. With extensive experience in the entertainment industry, JB Systems offers a comprehensive catalog that includes moving heads, LED pars, lighting effects, DJ mixers, amplifiers, loudspeakers, smoke machines, and DMX controllers. JB Systems products are appreciated for their reliability, ease of use, and competitive price-performance ratio, making them ideal for DJs, bands, nightclubs, rental companies, and permanent installations. On musicdelivery.net, you can find the complete JB Systems range: audio solutions, lights, and effects for events, discos, and live productions.
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Shipments
Shipments
We ship throughout Italy and the European Union via selected express courier partners. All orders travel in special reinforced packaging and are covered by 100% included insurance to fully protect the value and integrity of professional equipment during transport.
Returns and refunds
Returns and refunds
You can request a return within 14 days of receiving the order. As these are professional hardware and devices, items must be returned completely intact, unused, unactivated, and sealed in their original packaging, complete with all accessories and manuals.
Frequently Asked Questions
Can't find the answer you're looking for? Our team of specialists is at your disposal for configurations or technical questions.
What are your shipping and delivery times?
What are your shipping and delivery times?
Orders are processed within 24/48 business hours. Delivery is made by insured express courier to guarantee maximum protection and safety even for the most delicate and expensive equipment.
Are the products covered by an official warranty?
Are the products covered by an official warranty?
Yes, all products are 100% original and covered by the official 24-month manufacturer's warranty. In addition, our technical department offers free after-sales support to assist you with the initial setup of your system.
How does the right of withdrawal work?
How does the right of withdrawal work?
If the hardware does not meet your expectations, you can return it within 14 days of receipt. The product must be returned intact, unused, and sealed in its original packaging, complete with all accessories and manuals.
What does it mean if a product is "Available on order"?
What does it mean if a product is "Available on order"?
Some complex professional audio systems or lighting equipment are ordered directly from official distributors based on customer requests. You can proceed with the purchase as normal and our team will immediately inform you of the exact arrival times at our warehouses.