JPS Labs Aluminata vs PAC Black AC Cables: Which Power Cable Fits Your Setup?

Quick Answer

Choose the JPS Labs PAC Black if you need a flexible high-current AC cord for a power amplifier, receiver, or line conditioner that feeds an entire system. The Aluminata is the reference option when you want the lowest noise floor and maximum resolution for a dedicated headphone amplifier or source component. For most high-end headphone setups, start with PAC Black on the amplifier and add Aluminata at the source or conditioner.

Power cables are the last link between your wall outlet and your audio system, and they often get less attention than interconnects or headphone cables. But on a resolving headphone rig, the AC cord can influence dynamics, noise floor, and low-frequency articulation. JPS Labs builds two distinct high-end options: the PAC Black High Power AC Cable and the Aluminata reference AC cable. They are not interchangeable in every system, and the right pick depends on current draw, component placement, and how much you value flexibility versus ultimate refinement.

This comparison sticks to the supplied catalog facts so you can match a cable to your actual setup. We will look at conductor design, power delivery, ergonomics, and where each cable tends to work best. You will also see how these AC cables interact with other JPS Labs products, including the UltraConductor 2 interconnects and the Diana headphone cable, so you can plan a coherent upgrade path rather than buying in isolation.

Conductor Design and Power Delivery

The PAC Black is described as a very large but flexible AC cord made specifically for the high power demands of any amplifier or receiver. It is also intended to deliver unhampered AC power to an entire system when used with line conditioners. That large conductor geometry is the reason it can feed power-hungry components without acting as a bottleneck. The catalog notes it works quite well on tube preamps too, so it is not limited to big solid-state amps.

The Aluminata is positioned as a reference AC cable. While the supplied facts do not list a specific conductor gauge or alloy, the Aluminata name and its reference status suggest it is built for maximum resolution and low noise rather than raw current delivery. In practice, that means it is often used on source components, preamps, or headphone amplifiers where the current draw is modest but the demand for a quiet background is high. If your component draws serious current, the PAC Black is the safer choice based on the supplied descriptions.

• Match the cable to the component's current draw first, then refine with a reference cable at the source.
• Use PAC Black on line conditioners that feed multiple components to avoid starving any one device.

Flexibility and Installation

The PAC Black is explicitly described as large but flexible. That matters behind a rack where space is tight and you may need to route the cable around corners or through a cable management channel. A stiff, heavy cable can strain the IEC inlet or pull a lightweight component off balance. The PAC Black's flexibility makes it easier to dress neatly, especially when you are connecting a power amplifier that sits low in the rack.

The Aluminata is a reference cable, and reference AC cables often prioritize shielding and conductor geometry over pliability. The supplied facts do not specify its flexibility, so treat that as a decision limitation: if you need to make tight bends or frequently move your system, the PAC Black is the more predictable choice. For a permanent install where the cable stays put, the Aluminata's potential sonic advantages may outweigh any ergonomic compromise. Both cables are available with different lengths and wall plugs, so measure your run before ordering.

• Measure from the outlet to the component's IEC inlet and add a service loop before choosing length.
• If the cable will be visible, consider how each cable's jacket and connector finish fit your room.

Where Each Cable Fits in a Headphone System

In a headphone-only system, the amplifier is usually the highest-current device. A tube amplifier like the Woo Audio WA6 (2nd gen) or the Woo Audio WA7 Fireflies (3rd gen) benefits from a stable AC supply, and the PAC Black's high-power design is a logical match. The WA6 can drive headphones from 8 to 600 Ohms, and the WA7 Fireflies delivers up to 1.5W per channel into low-impedance loads. Both will reward a power cable that does not restrict transient current delivery.

The Aluminata tends to make more sense on a DAC, streamer, or preamplifier where the goal is a black background and fine detail. If you use a line conditioner, you could run PAC Black from the wall to the conditioner, then use Aluminata from the conditioner to your source components. That hybrid approach lets each cable do what it is best at: PAC Black handles the heavy lifting, while Aluminata refines the low-current components. The same logic applies to interconnects: JPS Labs UltraConductor 2 cables are a low-cost, high-performance option for RCA and XLR runs, so you can upgrade AC and signal paths in stages.

• Put the high-current cable on the amplifier and the reference cable on the DAC or preamp.
• If you use a power conditioner, feed it with PAC Black and distribute Aluminata to source gear.

Trade-Offs at a Glance

• PAC Black: current capacity vs. refinement: PAC Black is built for high power demands and is very large but flexible. It excels at delivering current to amplifiers and conditioners, but it is not described as a reference cable for low-level resolution. Choose PAC Black when current delivery and flexibility matter most.
• Aluminata: refinement vs. unspecified flexibility: Aluminata is a reference AC cable, which suggests a focus on low noise and detail. The supplied facts do not specify its flexibility or current rating, so it may be less suited to tight bends or high-current amplifiers. Choose Aluminata for source components where resolution is the priority, and verify the return policy if flexibility is critical.
• System-wide vs. component-specific upgrades: PAC Black can feed an entire system through a line conditioner, while Aluminata is typically used on individual low-current components. Mixing both lets you address current and refinement separately. A hybrid approach often gives the best balance: PAC Black at the wall or conditioner, Aluminata at the source.

Product Facts

• JPS Labs PAC Black High Power AC Cable: PAC Black is a very large but flexible AC cord made specifically for the high power demands of any amplifier or receiver, or to deliver unhampered AC power to the entire system when used with line conditioners. It works quite well on tube preamps and brings out an articulated low-frequency bass response. This makes PAC Black the practical choice for power amplifiers, receivers, and line conditioners that feed multiple components. Its flexibility helps with cable management behind a rack.
• JPS Labs UltraConductor 2 - RCA & XLR Interconnect Cables: UltraConductor 2 uses Alumiloy conductors and is described as a very good choice for low cost and high performance. It is available with RCA or XLR connectors and in multiple lengths. If you are upgrading your AC path, matching interconnects keep the signal chain consistent. The UltraConductor 2 offers a lower-cost entry point to JPS Labs conductor technology.
• Diana Headphone Cable for Diana Stock Replacement and JOAL Upgrades: Made specifically by JPS Labs for the ABYSS Diana headphone, with high quality gold plated molded plugs that fit Diana and JOAL perfectly. It is also a customizable upgrade over the stock JOAL headphone cable, providing a higher level of resolution particularly when combined with leather or hybrid ear pad upgrades. A headphone cable upgrade can reveal more of what your amplifier and AC cables are doing. If you already own a Diana or JOAL, this is a logical next step after sorting out power.

Which Cable Fits Your Setup?

Best for

• Power amplifiers, receivers, and integrated amps that draw high current
• Line conditioners that distribute AC to an entire headphone system
• Racks with tight spaces where a large but flexible cable is easier to route
• Tube preamps and amplifiers that benefit from stable low-frequency delivery

Not for

• Source components where the priority is a lower noise floor and maximum detail retrieval
• Systems where the AC cable must be extremely pliable for frequent reconfiguration
• Buyers who need a single cable to both feed a high-current amp and refine a DAC

The JPS Labs PAC Black and Aluminata serve different roles in a high-end headphone system. PAC Black is the high-current workhorse for amplifiers and line conditioners, while Aluminata is the reference choice for source components where quietness and resolution matter most. Start with PAC Black on the component that draws the most power, then add Aluminata at the source when you are ready to refine the noise floor. That staged approach lets you hear the difference each cable makes without overbuying at once.