Pioneer - GR-333 Equalizer

Pioneer GR-333 – The Visual and Sonic Spectacle of the 80s

We present the legendary Pioneer GR-333, a stereo graphic equalizer that is as famous for its bold look as for its ability to sculpt sound with precision.

Manufactured in 1989, this model embodies the spirit of the era: analog high-tech design, solid construction and a look that literally lights up your equipment rack. For the discerning collector, the GR-333 is not just a audio tool; it is a design piece and a time capsule from Pioneer’s golden era.

Condition and Observations (Collector’s notes)
As shown in the images (and the honesty the vintage market demands):

Provenance: Unit manufactured in Japan.

Visual Condition: Very good. The chassis is solid and the front panel well preserved. Aiming for the best possible condition for collectible pieces.

Functional Condition: 100% operational and tested. All sliders glide smoothly and the switches (Power, Equalizer, Tape Monitor) operate with precision. The sound is clean and noise-free (within the impressive 106 dB S/R ratio).

The Light Show: ALL LEDs on the sliders are functional and light up perfectly. This is the most critical and valued feature of this model.

Professional Sound Control
Beyond the visual spectacle, the GR-333 is an extremely capable acoustic tuning tool. While common tone controls (bass/treble) offer a limited adjustment curve, this equalizer lets you sculpt the sound with surgical precision in 7 bands per channel.

- 7 Bands per Channel: 60, 150, 400, 1k, 2.4k, 6k and 15kHz.

- Control Range: ±10dB per band, allowing fine corrections to the room’s acoustic response or to bring out specific instruments (more punch to the kick at 60Hz, bring vocals forward at 1kHz, or make cymbals crisper at 6kHz).

It is the ideal partner for critical listening or for “playing” with the sound, discovering new textures in your favorite music.

Technical Specifications (Full Sheet)
For enthusiasts who appreciate the details of Japanese engineering:

Type: Stereo Graphic Equalizer (Analog)

Number of Bands: 7 per channel (14 in total)

Control Frequencies: 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.4 kHz, 6 kHz, 15 kHz

Control Range: ± 10 dB

Frequency Response: 5 Hz to 50 kHz (an impressive bandwidth ensuring nothing is missed)

Signal-to-Noise Ratio: 106 dB

Total Harmonic Distortion (THD): 0.03% (incredibly low, ensuring the equalizer doesn’t color the sound when it’s “flat”)

Input Sensitivity: 150 mV

Output Level: 150 mV

Gain: ± 0 dB (when the sliders are at “0”, the signal passes through with no gain)

Functions: Equalizer ON/OFF, Tape Monitoring

Inputs and Outputs: Stereo RCA connections (Input and Output for Tape)

Voltage: 220V (Original, no external transformers)

Dimensions (L x H x D): 420 mm x 60 mm x 221 mm

Weight: 2.2 kg

To deliver this product properly, it is carefully packed in very sturdy boxes, wrapped in bubble wrap with plenty of filler material. We mainly use plastic as filler material, but if you prefer another material, please contact us. The package will be shipped with insurance to protect both the buyer and the seller. For special packaging requests, please send a message after purchase. Photos serve as an additional description of the product’s condition / the display and LEDs. Please review them carefully before purchase. Island or special destinations, such as the Canary Islands, Malta, will incur higher shipping costs.