Quadraspire Signature X-Reference 4-Shelf HiFi Rack

The Quadraspire Signature X-Reference 4-Shelf HiFi Rack is the X-Reference in black Nextel: four slotted SVT shelves and their X frames all Nextel coated, on 44 mm natural aluminum (silver) columns, with bronze feet under every shelf and bronze spikes underneath. This is its most common configuration, 36.3 inches tall and ready to order, made in Britain by Quadraspire, and every part of it can still be changed in our rack builder.

Key Features of the Quadraspire Signature X-Reference 4-Shelf HiFi Rack

• Black Nextel Shelves and Frames: Four slotted SVT shelves, 23.2 x 18.5 in, on four black Nextel X frames.
• Bronze Under Every Shelf: Each shelf sits on four bronze feet in its X frame instead of fixing straight to the columns.
• Natural Aluminum Columns: 44 mm columns in natural aluminum (silver), thicker than the 32 mm columns on the SVT and Q4 EVO.
• Bronze Spikes: Natural aluminum feet with bronze spikes put the bottom shelf 6.3 inches off the floor.
• 175 lb Per Shelf: Each of the four levels is rated to 80 kg.
• No Parallel Lines: The curved frames, shelves and columns avoid the parallel surfaces that encourage resonance, the same idea behind most musical instruments.
• Made in Britain: Quadraspire has built its racks in England since 1995.

Who Is Quadraspire?

Quadraspire is a British maker of hi-fi furniture, founded in 1995 and now building racks in Hallatrow, England. Their argument is simple: what you place your hi-fi on affects how it performs. Quadraspire picks every material and shape to reduce resonance, with the stated goal of lowering the noise floor and opening up the soundstage. The X-Reference is the top tier of their range.

Why Nextel, Bronze and Aluminum

The Signature takes the X-Reference and coats it in Nextel, which Quadraspire uses to make a system sound better and to give the rack a striking finish. Each level is two parts: the columns screw into a Nextel X frame, and the shelf rests on four bronze feet set into that frame. Quadraspire's research found that bronze and brass are good materials for reducing resonance, and it is no coincidence that a lot of musical instruments use them.

The X frame is Nextel coated and built to be light while keeping its strength: one X shelf weighs 2.2 kg and holds over 80 kg.

The 44 mm columns and the feet are natural aluminum, because steel tube can resonate and aluminum has much less resonance. The feet finish in bronze spikes.

The frames, shelves and columns are curved on purpose: parallel lines encourage resonance, so the Signature avoids them wherever it can.

The Spacing, Shelf by Shelf

From the floor up, this rack uses columns of 250, 250 and 200 mm. Each shelf rides on bronze feet above its X frame, so the clear space over a shelf is 70 mm less than the column: 7.1 inches (180 mm) above the bottom two shelves and 5.1 inches (130 mm) above the third. The two lower shelves take the heavier pieces, an integrated or a power amp, and the third suits a streamer, DAC or phono stage. The top shelf has nothing above it, so a turntable lid opens all the way. The bottom shelf sits 6.3 inches off the floor, and the rack is 36.3 inches tall to the top shelf.

Build Your Own Signature X-Reference

This rack is one way to build a Signature X-Reference. In our builder you pick the number of shelves, a 200, 250, 300, 350 or 400 mm column for each level, black or orange Nextel X frames, and spikes alone or with QC or QX7 floor protectors. The columns stay natural aluminum. It draws the rack to scale and prices it as you go, and Mike can check the design before you order.

Here is the Signature with orange Nextel X frames. Tap it to open the builder in that finish.

Orange Nextel X frames, black shelves

Build Your Signature X-Reference

Add a Matching Signature X-Reference Amp Stand

A monoblock pair or a big power amp often lives on the floor next to the rack rather than in it. The Quadraspire Signature X-Reference Amp Stand is one Signature level on natural aluminum feet with bronze spikes, in the same black Nextel, and adding one or two with this rack takes about 10% off each stand.

The Listening Room Difference

We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.

Quadraspire Signature X-Reference 4-Shelf HiFi Rack Specifications