Previous Demo Arc Audio SE2300 2 Channel Audiophile Amplifier.
Comes complete with all hardware, manual and the original box.

2 Channels @ 4 ohms 330 Watts
2 Channels @ 2 ohms 660 Watts
1 Channel @ 4 ohms (bridged) 1300 Watts
1 Channel @ 2 ohms (bridged) 1300 Watts
Frequency Response 4Hz - 100kHz
Crossover Range 30Hz - 500Hz
Crossover Range X10 300Hz - 5500kHz
Bass Boost 0 - 15dB @ 20Hz - 80Hz
S/N Ratio 90 dB (RCA In)
Input Sensitivity (Low) .3V - 4V
Input Sensitivity (Bal) .4V - 8V
Max current draw 222A @ 1800 Watts 20% THD
Idle Current 1.14 Amp
Fuse 3 x 40 Amp
Dimensions 19.5"(L) x 8.0" (W) x 2.5"(H)

Signature Edition by Robert Zeff is our no-compromise, high power, audiophile amplifier designed and engineered by Robert Zeff and the staff at Nikola Engineering. This design is taken from Roberts many years of experience in both professional and the car audio industries where he daily used, repaired and built high power, high fidelity amplifiers. With these lessons well learned over 30 years, he finally had the opportunity to make for ARC Audio the no compromise, no limits amplifier he had always dreamt of.

Signature Edition is a Hard Bias Class A/B amplifier. A simple Class B amplifier uses 2 output transistors to supply the current that moves the speaker. The positive transistor will push the woofer out and the negative will pull it back. In this design, only 1 transistor is working at any given time. It is the transition between positive and negative that leads to the higher distortion that makes a Class B amplifier unacceptable for audio reproduction. In most cases, a bias circuit is added to a Class B amplifier making it a Class A/B. The Bias circuit improves the distortion by slightly turning on the unused output device while current is flowing across the other. The more bias you add the lower the distortion but there is a side effect. Heat is created as the 2 output transistors are both on at the same time. The more bias you add the better it sounds but the more heat you produce but heat changes the natural bias of the output devices.

More heat equals more bias until you reach the point of over bias and the amplifier fails. The trick to the Signature Edition Bias circuit is managing the bias current at any temperature. By carefully matching the bias of every amp we are able to maintain stable bias across the temperature range allowing the technician "dial in" much more bias than a conventional class A/B amplifier. This is one of the key elements to the Signature Editions amazingly transparent sound.

The key to running so much bias is heat management. Signature Edition has a unique heat sink design that uses a 4" fan mounted in the center of the circuit board to force cool air in a cross flow pattern across a massive finned heat sink before exhausting it from the ends. This design minimizes the effects of installation location on the thermal performance of the amplifier. Mounted upside down, under or behind a seat or beneath a panel Signature Edition will perform equally well.

To further improve the dynamics and efficiency the Signature Edition amplifier exclusively uses stiffly regulated, fully isolated power supplies. Regulation not only improves the damping factor and overall control of an amplifier but it eliminates any effect of voltage drops in the charging system may have.

Audiophile sound quality based design
Designed by Robert Zeff
Class A/B switching design
Microprocessor controlled design
Microprocessor controlled Code based flashing diagnostics
Concealed adjustment controls
Open architecture adjustable crossovers on all channels HP/BP/LP/FP
12/24Db per octave selectable crossover slopes on all channels
Internal chassis force cooled speed controlled fan for optimum cooling
Hi/Low-level balanced switchblade RCA inputs for maximum system integration
RJ45 Ethernet input connections for true balanced input connections
Block type terminal connections
256 color user selectable illumination circuit
Combined Bias circuit and temperature regulation circuit to regulate bias and lower THD at any point in total thermal cycle
Microprocessor high voltage power supply allows the amplifier to optimize power output at different ohm loads without the loss of efficiency or sound quality
Vdrive based preamp stage improves efficiency lower internal signal loss
Handpicked output devices used on all SE amplifiers.

Previous Demo Arc Audio XDI 1100.5 5 Channel Amplifier.

Comes complete with all hardware but is missing the original box.

Previous Demo Arc Audio Xdi 650.1 Monoblock Subwoofer Amplifier.
Comes complete with all hardware but is missing the original box.

• Bridged Mode Auto Detect Turn-On works with most chip based OEM Headunits.
• Fully Balanced Input Stage significantly increases flexibility.
• RCA Inputs are compatible with speaker level inputs.
• Micro Processor controlled protection including Short Circuit, Thermal, DC Offset, Over-voltage, and Under-voltage.
• Fault Code Storage of the last protection code detected.
• Quick Disconnect speaker terminal plugs.
• Audiophile Class D output filter networks.
• Remote Bass Level control capability for quick tweaking of the low-frequency level.
• 1 Channel at 4 ohms: 185 Watts
• 1 Channel at 2 ohms: 350 Watts
• 1 Channel at 1 ohms: 650 Watts
• Frequency Response: 20Hz - 230kHz
• Crossover Range: 30Hz - 230Hz 24dB
• Bass Boost: Variable 0-12dB
• Bass Boost Freq.: Variable 30Hz - 125Hz
• Remote Level Control Included: Yes
• Input Sensitivity (Low): 200mV - 3.5V
• Fuse: 2 x 30 amp
• Cosmetic Trim: XDi Level 1
• Dimensions: 9.020"(L) x 6.268"(W) x 2.162(H)

Based on our basic principles “handmade” and “made in Germany” we have designed the amplifier BRAX MX4 according to the latest technical knowledge. The result is both a top-class amplifier and a true high-end statement: A long-lasting period of research and development, innovative technologies and an extremely fastidious manufacturing combined with the love for music as the driving force for our work make the BRAX MX4 doubtlessly to the most powerful and best sounding 4-channel amplifier of the world.

Concerning the straight design of the MX4-amplifier and the sophisticated layout of the circuit board, we have deliberately set crossovers and filter functions aside. Short signal paths combined with selected components “made in Germany” ensure pristine listening pleasure and underline the puristical high-end philosophy of the BRAX MX4.

In order to completely eliminate power differences and manufacturing tolerances, we only use hand-selected transistors for the production of each MX4-amplifier. Concerning power-, voltage- and resistance data we select them in more than 300 categories. Thus, all transistors harmonize perfectly in terms of technical specifications. In doing so, our BRAX amplifiers obtain a worldwide reference status. Striving for ultimate perfection, Audiotec Fischer is the only manufacturer of audiophile products on the globe that conducts this extensive and time-consuming hand-selection. Of course, all the instruments that are necessary for this procedure are in-house developments.

Two separate power supplies for the channels A/B and C/D account for an endlessly stable power output. The amplifier’s output is even stable when you connect loudspeakers and a woofer with different impedances to the BRAX MX4. In order to control voltage fluctuations, an external power stabilizer can directly be connected to the power supply. Moreover, the solid and gold-plated terminals for cables up to 50mm² make another contribution to an ideal power supply of the BRAX MX4.

At the end of the day, the BRAX MX4 can be described as an amplifier with a sound rendition that is highly dynamic, powerful in an awesome way and swift as an arrow. The underlying philosophy is topped-off by a packaging in a precious wooden box. Furthermore, every single amplifier is manufactured individually and its respective serial number is recorded in our database. The amplifier BRAX MX4 is only produced on demand and of course, we can respond to our customer’s requirements. In this way, each amplifier is a valuable individual item that rightly deserves the title “high-end made in Germany”.

• Optical digital inputs used for the upcoming BRAX DSP (2 x Toslink)
• Separate terminal for connecting a BRAX Power Stabilizer directly to the switching transistors
• Eight capacitors (with a total capacity of 40,000 microFarad) take care of an extremely high current impulse load
• 200 Ampere high-performance switching transistors
• Interference-free power supply due to optimized suppression coil up to 300 Ampere with ultra-low internal resistance
• Especially developed transformers with highly-efficient core materials guarantee a total performance of more than 1,800 Watts
• High efficiency due to super-fast Schottky power diodes with more than 160 Ampere in total
• Below the lateral PC-boards, there are in total 32 hand-selected high-end MOSFET transistors which account for brilliant sound
• Processor controlled operating data management of the amplifier and power supply. It also controls the optional fan. Furthermore, the processor is supervising the whole amplifier and shuts it down in case of malfunctions
• Engraved serial number on the stainless steel plate
• Impedance independent output power of around 280 Watts per channel
• 4-, 2- and 1-Ohms stable
• Optional fan at the bottom plate with processor supported fan control
• The solid heatsink, made of a special aluminum alloy takes care of a perfect cooling of power supply transistors and those of the amplifier

Helix builds their Esprit subwoofers to fit in places that normal subs won't. Coming in at just 3-1/2" deep, the Esprit E12W 12" shallow-mount sub lets you get creative with placement while giving you impressive bass. German engineering shines through on this sub, as Helix uses technology from their high-end Precision Series to create a super-slim driver that delivers superior performance and handles plenty of power. You'll enjoy highly accurate bass reproduction in applications where space is an issue.

• 12" shallow-mount subwoofer with dual 2-ohm voice coils
• fiberglass coated honeycomb membrane woofer with rubber surround
• die-cast aluminum frame
• power range: 100-400 watts RMS (600 watts peak power)
• frequency response: not available
• sensitivity: 88 dB
• top-mount depth: 3-1/2"
• sealed box volume: 0.90 cubic feet
• ported box volume: 1.75 cubic feet

The Hybrid Audio Legatia L6 Limited Edition 7.1-Inch Cone Midrange/Midbass Gold Anniversary Series- A hand-matched limited edition product to celebrate the two-year anniversary of the SE Series.

The Legatia L6LE’s topology is an enhanced Special Edition version of the massively successful ‘original’ first-generation Legatia L6 transducer, which was launched in January 2007 to an enthusiastic reception of car audio competitors, enthusiasts, and car audiophiles. In the years since its inception, the L6 midbass/midrange has been included in several national- and world-championship vehicles and was the midbass of choice for five consecutive years of International Auto Sound Challenge Association (IASCA) domination by Hybrid Audio competitors from 2007 through 2011.

The Legatia L6LE is a 181mm (7.1-inch) wide-bandwidth midbass/midrange driver to compliment both two-way and three-way system designs, where a point-source midrange and/or dedicated midbass driver is required.

The Hybrid Audio Legatia L6LE is the ideal multi-purpose super high-end speaker driver. Mechanical and electrical parameters are amenable to a variety of different installations and speaker locations. This driver is intended to be used in an infinite baffle configuration; a simple, solid baffle, solidly attached to the car’s chassis with available airspace at the rear of the baffle is all that is required for optimum operation. The size of the L6SE allows it to be mounted in typical “6-inch” midbass locations within a vehicle, or in custom locations at the discretion of the end-user, as long as there is adequate airspace behind the driver to allow it to maintain proper damping and acoustic suspension.

At home in virtually any arrangement, the L6SE is Hybrid Audio Technologies Legatia SE high-end large-format midrange/midbass offering, boasting exceptional performance and a design philosophy that goes hand in hand with true high-fidelity playback.