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For sale: a Studiomaster SEQ-152 Pro graphic equalizer, a professional 15-band stereo EQ designed for live sound, studio use, and fixed installations. Known for its reliable performance and solid build quality, the SEQ-152 offers precise frequency control and clean signal handling.
Condition:
The unit is in minor damaged condition.
- Light scratches and signs of normal professional use
- No dents or missing parts
- Front panel and sliders are intact
Technically fully functional
All bands respond correctly and the unit passes clean audio.
Cosmetic wear is purely visual.
''Important note when tested: When we find there's either a small thing wrong, or not 100% working we offer our listings for parts or repair to avoid unwanted issues after purchase''
Specs:
- Type: Stereo graphic equalizer
- Bands: 15 per channel
- Frequency range: 20 Hz - 20 kHz
- Boost/Cut range: ±12 dB
- Inputs: Balanced line (XLR / TRS)
- Outputs: Balanced line
- Channel configuration: Stereo
- Format: 19″ rack-mount
- Application: Professional audio
Dimensions (LxWxH): 43x25x8cm
Weight: 5 Kg
Volts: 110/230v (in case of only 230v. in USA you will need a adapter)
Working condition: Fully working (See pictures for the cosmetic condition of this lot)
Missing or damages: Minor Usage Marks
Does not come with fixed/factory power cable.
We ship worldwide.
Will ship to the USA as well. We ship DDP bases (Delivery Dutie Paid)
-Shipping in the EU up to 30 KG (max)
-Shipping outside of the EU up to 20 KG (max)
Please note: ‘'Whenever an item exceeds the weight noted above. Please ask for a shipping quote before making a purchase. The shipping costs are estimated in our shop because we do not know the shipping address.
Picking up the item is also possible. It can be picked up in Alkmaar
Delivery by us is also possible in some cases. Please reach out to us for more information about deliveries
State of listing: If a listing is listed ''for parts or not working'' returns are not accepted.
When we offer our products with the notice ''Serviced'' or ''Fully serviced'' that means the device is either lightly ''serviced'' with a new belt, and cleaned the pots, Or ''Fully serviced'' recapped, Quiescent current adjusted etc as expected from a full service
Generating expert take…
Quiescent emerged in 2017 as the evolution of Vertex AQ, a UK-based pioneer in noise and vibration control for audio systems with over two decades of acclaimed products. Retaining co-founder John Cheadle and introducing designer Nigel Payne, the brand carries forward Vertex's legacy of tackling interference at its source, rooted in meticulous engineering from England.
The company's focus lies in high-performance infrastructure that eliminates EMI, RFI, and acoustic vibrations across audio chains, from digital inputs to component supports. Quiescent offers premium power amplifiers like the T100SPA stereo model and T100MPA monos, alongside the T500VA balanced mains supply, plus specialized mains, loudspeaker cabling, and interconnects—all incorporating proprietary QPower noise-suppression systems for mechanical and electrical purity.
Positioned firmly in the high-end audiophile market, Quiescent commands a niche boutique reputation for revelatory noise reduction that unlocks source fidelity, earning reviewer praise and a devoted following among discerning enthusiasts seeking uncolored, lifelike sound reproduction.
See all Quiescent listings on RADAR.
