【Zonotone Grandio SP-1 (3.5 m)｜Speaker Cable Rethinking Sound Thickness and Soundstage】

“I want a little more thickness to the sound.”
“I want to enhance the presence of vocals and instruments.”
“I want it to deliver a powerful sound even when I turn the volume up.”

In such cases, there’s an approach that looks beyond just speakers and amplifiers—by focusing on the speaker cable that delivers the audio signal.

Zonotone Grandio SP-1 (3.5 m) is a speaker cable made by combining multiple high-purity copper-based materials. In addition to sound thickness and impact, it’s designed with consideration for the expansion of the soundstage and the sense of depth. It’s suited for people who want to add another step of change to their current car audio.

Add Density and Impact to Your Everyday Music

By incorporating the Grandio SP-1 (3.5 m) into your system, you may be able to notice changes in the vocal definition, the presence of instruments, and the overall density of the music.

When the sound feels thin, or when you have trouble getting real punch even after raising the volume, revisiting the foundation of the sound can change your impression of the audio. With live recordings, you may find it easier to perceive the stage’s spread, and the placement relationship between vocals and instruments may sound more natural.

However, simply swapping the cable won’t produce the same result in every car. The final direction depends on the combination of speakers, amplifiers, DSP, and your existing wiring.

Choosing a Cable Means Thinking Through Installation as Well

A speaker cable isn’t something you consider only by the product itself—you need to think about where it will be used, how it will be routed, and how the terminals will be handled.

Even if you replace the cable, if the cable doesn’t match your system or if the installation method isn’t right, the changes you expected may be hard to achieve. On the other hand, if it’s used appropriately in the parts that fit your current setup, it can be easier to feel that the expense was worthwhile.

If it were me, I wouldn’t decide the cable in isolation first. I would check your current sound dissatisfaction and the entire system, then decide where to use it.

At LOGON, We Recommend Based on Your Car and How You Listen

At LOGON, while we learn about your vehicle’s system configuration, the music you usually listen to, and the issues you’re currently feeling, we also guide you on whether there’s a meaningful reason to use the Grandio SP-1 (3.5 m).

Even when considering changes together with swapping speakers and/or amplifiers, we don’t just make the cable expensive. We organize together what parts are more likely to feel a change in sound, and what installation you should prioritize in your current system.

By considering everything—from wiring handling and terminal finishing to adjustments after installation—we help you move toward sound that you can enjoy on your everyday drives, rather than sound that’s just the result of swapping a product.

If you want to add a little more thickness or impact to your current sound, or if you want to hear vocals and instruments more impressively, please consult us starting with whether the Grandio SP-1 (3.5 m) will suit your current car.

Main Specifications / Specs

【Basic Information】
Product name: Grandio SP-1 (3.5 m)
Brand: Zonotone
Type: Speaker cable
Length: 3.5 m

【Conductor Materials】
・Ultra-high-purity 7N-class Cu
・High-performance pure copper wire HiFC
・High-purity oxygen-free copper wire PCUHD
・Tin-plated high-purity copper
・High-purity oxygen-free copper OFC

※Specifications have been organized based on publicly available information that could be confirmed.
※For actual usage locations and installation methods, we will guide you after confirming your vehicle’s system configuration.