REL

Classic 99

Name: Classic 99
Brand: REL
SKU: REL-CLASSIC-99

Model Classic 99 Walnut-1 · Series Classic

A Modern Classic with Vintage Soul, Warm, Deep, and Effortlessly Musical. Classic 99 enriches any system with warm, textured bass that unfolds gracefully into the room. Its acoustic-suspension design delivers natural ease and beautifully layered tone.

At a glance

All specifications

Power: 450 W per channel
Type: Closed Box, down-firing driver
Low Frequency Extension: -6dB at 24Hz Low Frequency
Output Connectors: N/A
Power Output: 450 watts (RMS)
Amplifier Type: Class D

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Features4
Downloads2
Films1
Awards and press8

Overview

A Modern Classic with Vintage Soul, Warm, Deep, and Effortlessly Musical.

Classic 99 enriches any system with warm, textured bass that unfolds gracefully into the room. Its acoustic-suspension design delivers natural ease and beautifully layered tone.

In the box

Classic 99 Subwoofer
6' AC Power Cord
32' Neutrik Speakon cable
User Manual & Warranty Information

Features

Designed to Be Superior
Design Classic 99 adopts the form language introduced in its model 98 stablemate. As comfortable as a pair of well-worn loafers, it features solid cabinet walls as thick as 32 mm, clad in rich, warm walnut veneer, hand fitted with care. The simplest of natural aluminum badges and softly radiused feet milled from solid billet, blacked out to allow it to seemingly float, ensure that nothing, not even a grille disturbs the vibe. Yet, as with all RELs, the styling conveys far more than simple comfort. The down-firing 12” driver, while unseen, will surely be felt. Continuing to the rear panel, one finds the period-correct detailing extends to the amplifier panel, where all controls are finished in lovely white gold. Everything that one encounters has the heft of quality switch gear, even the click made by the phase switch is near perfection. Quality abounds everywhere one looks or touches. Don’t be surprised if your children fight over it later in life.
Driven to be Louder. And Quieter.
Driver As anyone familiar with REL will tell you, we always begin with the driver. In this case, a bespoke 12” long stroke driver that uses lightweight, stiff, hot-pressed paper to form the main body of the cone. Laid atop that is a stiff center cap made of hand-thrown paper; to randomize the fibres, ensuring that the driver has excellent self-damping. This is one of REL’s secrets. Understanding that it is the quietness, that attention to bring the driver to complete silence, that produces the most startling dynamics. Whilst Classic 99 will play shatteringly loud, it’s from the very black background that the loudest dynamics emerge to produce the sense of shock sought by great composers and directors.
More than Ample Amplification
Amplifier Classic 99 is big, bold, and full of character, similar to the Stentor II of our youth, but at one-third the price. Of course, the 99 has a great amp. In order to generate deeper bass and significantly higher output, we turned to a tried-and-true Class D amplifier that we’ve already used in thousands of previous units. This 450 watt amplifier is fed by an all analogue PerfectFilter front end that extends useful output well into the low 20 Hz range - superb for a design of this size and price. It produces a sound that’s both rich and richly detailed at the same time. Classic 99 borrows the best from current technology to deliver a sound slightly warmer and more like what we all imagine vintage sound to be, with superior reliability and performance than was ever available back in the day.
The Freedom of Clean Connection
Wireless The future meets the past in REL Acoustics wireless offerings, now centered on HT-Air MKII Wireless. Designed for seamless integration, it supports Left or Right Low Level Connection or .1/LFE. High-Level Connectivity is not supported with the HT-Air MKII. Operating on a 5.8 GHz platform, HT-Air MKII delivers uncompressed, stable wireless performance with carefully engineered front-end components for maximum signal integrity. The result is clean, reliable transmission without cable clutter, preserving both sound quality and living space aesthetics. It’s a simple, affordable way to bring REL’s trusted wireless performance into more systems—delivering freedom, flexibility, and purity of connection. Explore HT-Air MKII Wireless

Specifications

Power: 450 W per channel; How much power it delivers to each speaker into its rated load.
Model code: REL-CLASSIC-99; Quote it when you ask a specialist.

Technical Specifications

Type: Closed Box, down-firing driver
Active Driver Size & Material: 12 in. (305mm) Amended Pulp-on-Paper, Downfiring Inverted Cone, Steel Chassis
Passive Radiator Size & Material: -
Low Frequency Extension: -6dB at 24Hz Low Frequency
Input Connectors: High Level Neutrik Speakon, Low Level RCA, LFE RCA
Output Connectors: N/A
Power Output: 450 watts (RMS)
Amplifier Type: Class D
Wireless Capability: HT-Air MKII Wireless or AirShip II, Sold separately
Dual Parametric Filter: N/A
Finish: Walnut veneer

Protection System

Fully Electronic Set Safe: Yes
D.C. Fault: Yes
Output Short: Yes
Mains Input Voltage: 220-240 volts, 110-120 volts for certain markets
Fuses: 4 Amp semi delay 220 volts operation 8 Amp semi delay 120 volts operation

Supplied Accessories

Mains Lead: Yes
Neutrik Speakon: 10 Meters (33’6”) Nominal
Interconnect: -
User Manual: Yes

Downloads

Classic 99 User ManualManual · English · PDF, 1.6 MB
Download
Classic 99 BrochureBrochure · English · PDF, 2.7 MB
Download

Films

REL Classic 99

Awards and press

"Improve ANY HiFi System with The REL Classic 99 Subwoofer. More than "Bigger, Faster, Stronger!"
- HiFi Huff
"This is a long-term investment in your life. This Classic 99 will add to even the best larger speakers. As I have previously noted, a subwoofer can be the most significant upgrade to any HiFi system. This is the single most musical REL out there."
- HiFi and Music Source
"What is the best musical subwoofer for audiophiles? REL Stadium and Stentor subwoofers comes to mind but now the modern day REL Classic 99 takes subwoofer for home audio to a different level."
- Jay's Iyagi
"it will also improve the sound as a whole, giving more insights and presence to tracks you thought you knew well.”
- hi-fi+
"This (the 99 Classic) is the single most musical REL out there.”
- HiFi and Music Source
"REL's Classic 99 Is NOT "just a" SUBWOOFER its a HiFi JOURNEY'S END"
- Pursuit Perfect System
"REL looks at subwoofers from a purely audiophile perspective. They calibrate their woofers, often without digital EQ or room correction. They are finished fantastically."
- Future Audiophile
"I know REL subwoofers so well by now the 99 only took me about 10 minutes to setup and be very happy with how it was integrated. I listened across a very wide variety of music including modern electronic heavy hitting bass, female vocals, folk music and modern jazz-ish stuff, audiophile stuff, some drum and bass and a real mixture for several days occasionally unplugging the REL to remind myself of what it was doing."
- Pursuit Perfect Systems