UREI 546 Dual Parametric Equaliser (Refurbished & Recapped)

Description

Refurbished

This UREI equaliser is on the bench being refurbished & recapped. All the electrolytic capacitors in the audio path have been replaced with Panasonic bipolar caps and the power supply has ben recapped & upgraded


Vintage equaliser from UREI. The 546 is a two-channel, four band parametric equaliser with variable high- and low-pass filters and input gain controls. In usual UREI fashion, the ergonomics and signal path have been honed to perfection , producing a highly useable, efficient EQ

Each band has a push-pull, in / out switch to bypass that band only. Each channel has a bypass switch and this 546 has been modified with a filter bypass switches. In bypass bandwidth is extended to 200 KHz

The 546 is easy to use with plenty of scope in the controls and well-judged linearity. The tightest filter setting has a high Q is suitable for notching out problem frequencies. At broader settings each band is wider & smoother. The 546 turns out to be my favourite bass equaliser – it’s easy to put weight into a bass sound, or warmth, or depth without it sounding wooly

“There’s also a certain curiosity factor with this eq. Every engineer that’s been in my studio since I got it has immediately zoned in on the 546 and been intrigued with it. There were only about 1,000 made, I believe, so it’s not something everyone has seen”

“Very useful piece of gear IMHO! Good for notching out annoying freq’s in guitars/vocals. You may find you like on a variety of sources”

“A friend was clearing out his studio of older stuff and gave me his a few years ago. It sounds good, great for bass, guitars or vocals. Mine seems a bit sensitive to overload, probably needs new caps.

The 546 was original UREI [United Recording Electronics Industries] gear from their Sun Valley days, and was pre – JBL. I think 70’s.”

“It’s a great parametric EQ for the price that they seem to fetch. They do not have a lot of headroom (which is a problem with lots of parametrics) but you can generally work around it. Not a warm or sweet sounding EQ but great for surgical stuff like fixing bad kicks, vocals, etc”

Photos show a 546 sold previously and will be replaced with photos of the item for sale

Dual-channel parametric equaliser with separate controls for each channel. Four bands per channel, with individual band defeat switches, and continuously-variable low- and high-pass filters. On this unit the filters have a bypass switch. Inputs & outputs are balanced on XLR and teminal strip. Channels can be cascaded via a backpanel switch to create a single-channel 8-band EQ 110 / 220 VAC input with rear-panel voltage switching. Power input via standard IEC socket. US, UK or Euro Schuko IEC cable supplied on request
Shallow 3U device suitable for 19" racks
Operating manual http://thehistoryofrecording.com/Manuals/UREI/UREI-546_Manual.pdf Gearslutz discussions https://www.gearslutz.com/board/high-end/31780-urei-546-parametric-eq.html https://www.gearslutz.com/board/so-much-gear-so-little-time/24065-curious-about-urei-546-eq.html
3U
Very good used condition. Some rack rash & waviness in the rack ears, but nothing unexpected for something of this age. All knobs are original & in good condition. Tested & working 100% Rebuilt & modified by Jim Williams at Audio Upgrades in LA. The power transformer was replaced with a toroidal unit and the PSU rebuilt with higher-value caps. All capacitors in the audio path have been bypassed. EQ filter caps replaced with Wima film caps. Opamps upgraded to Linear Technology LT1359CN chips. High / low-pass filter bypass switches fitted   Vintage gear All vintage gear will have case scratches and marks. It may also have, or develop, noisy pots and switches. I make my descriptions as accurate as possible and note any existing defects. I test each item before shipping but please understand that vintage gear will not be perfect and adjust your expectations accordingly