Clearaudio Quadro Clamp - Heavy Record Weight

360 Grams of Turned Stainless Steel, Held Down by Gravity Alone

The Clearaudio Quadro Clamp is sold each, one per turntable. It is the tall version: 360 grams of precision-turned stainless steel, bead-blasted to a satin finish, with a Teflon insert in the spindle bore. There is no screw and no mechanism — it works by mass.

Where a record and platter are not touching, the platter cannot damp the record. A heavy weight settled over the label pulls the two together across the clamping area and holds them there for the whole side, which is the part of the disc a stylus reaches when it is working hardest.

Mass, a Teflon Seat, and Nothing to Wind Down

Fit, Load and Materials

The clamp weighs 360 grams and adds 0.79 pounds to the platter bearing. That is a real load: a rigid, unsprung deck with a substantial bearing takes it without complaint, and a lightly sprung suspended turntable is the wrong home for it, and so is any deck whose maker sets a limit on what the platter bearing should carry.

The body is turned from solid stainless steel and bead-blasted, so it wears fingerprints far better than a polished weight. The Teflon insert in the bore lets it seat square on the spindle without binding, and keeps steel off the spindle.

This is the taller of the two Quadro versions, and the difference between them is clearance rather than quality. The Quadro Clamp Low Version is the flat one, cut down so it passes under the travel of Clearaudio's tangential tonearms. If your arm sweeps across the record rather than pivoting, that is the version to order.

Who Is the Quadro Clamp Best For?

• You run a rigid, unsprung turntable — a solid plinth and a proper bearing carry 0.79 pounds all day
• You want mass rather than a mechanism — nothing to tighten, nothing to wear, nothing to over-torque against the spindle
• Your records lift near the label — 360 grams settles the disc onto the mat across the clamping area
• You want a finish that stays looking right — bead-blasted stainless hides handling marks that polished steel shows
• You run a tangential tonearm — this tall version fouls the arm's travel; the Quadro Clamp Low Version is the one Clearaudio makes for those decks

How Do You Use It?

Set the record down and let it settle on the mat. Hold the clamp level, line the bore up with the spindle, and lower it until the Teflon insert seats and the base rests on the label. Let go — do not press. Lift it straight up before turning the record over, rather than tilting it off.

Pairs Well With

What most Quadro Clamp owners shop next.

• Turntable mats — the mass only helps if the surface under the record is worth pressing it onto
• Stylus force gauges — the other measurement that decides how a record tracks
• Record brushes — a dry sweep each side, with the record locked down
• Record cleaning machines — the biggest single change you can make to a used collection

Frequently Asked Questions

How many do I need?

One. The Quadro Clamp is sold each and a turntable takes a single weight.

Is 360 grams too much for my bearing?

It adds 0.79 pounds. Rigid, unsprung decks with a substantial main bearing handle that comfortably. On a sprung suspended turntable, check what the maker allows before adding weight to the platter.

Will it work with a tangential tonearm?

The flat version is the one for those. Clearaudio makes the Quadro Clamp Low Version specifically to clear the travel of its tangential arms, and that is the one to order if you run one.

Does it screw down?

It does not. The Quadro is a pure gravity weight — you lower it over the spindle and its own mass does the rest. There is no thread, so it fits smooth spindles and cannot be over-tightened.

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