500 Series Equalizers & Filters

The Cranesong Insigna is a 500-series module tube EQ designed by Dave Hill and comes from a long line of industry standard, high quality audio hardware. The unit is based around a dual triode circuit with a 12AX7 tube, featuring 2 shelving EQs, a...

The dbx 530 Parametric EQ offers a unique degree of equalization flexibility in the popular 500 Series format. Based upon the classic dbx 905, the dbx 530 is an uncompromising equalizer offering true, fully parametric operation of all three filter bands!...

Wunder Audio Allotrope EQ The Wunder Audio Alloptrope EQ is a classic inductor-based baxandall equalizer with has the same EQ circuit as the Wunder Audio PEQ2. All aspects of this design from the metalwork to the components in the circuit are made to...

Pivot Tone Channel / 500 At a Glance Class A Discrete input line buffer amp Class A Discrete 10meg ohm DI input Class A Discrete output amp Phoenix custom output transformer Unique 3 position pivot point sloping EQ Controllable LF, MF & HF...

Introducing the Vacbax tube equalizer module.Buttery smooth Baxandall style tone control in a fully compliant all-tube 500-series module.

The B15 is a unique gyratory circuit with a transformer balanced input and output.Sonically, it provides a sonic texture between the punchier sound of 312 and colored sound of 1073, while providing necessary musical equalization to your record path.Pair...

The 32EQ Harrison Consoles and Great River Electronics are proud to announce a new product collaboration – the 32EQ.The 32EQ is a new 500-series version of the EQ and filters from the renowned Harrison 32 Series consoles. The 32EQ incorporates the...

CHANDLER LIMITED furiously enters the 500 race with its new line of 500 Series Modules for your favorite lunch box! Using all discrete circuits that combine Chandler’s best designs with the hottest designs from the past, transformer balanced...

A two-band program EQ with stepped controls. Designed to work in standard “500″ racks. The LILPEQr emulates the colorful 3D richness and useful responses of our favorite vintage tube (aka valve) program EQs (namely, the Lang PEQ-1 and...

The 1073D (Deluxe) is essentially a 1073 module with extra high frequencies and a direct input for the 500 series market. Built using the same exact parts as the 10 series module, the 1073D features Carnhill transformers, Elma gold plated switches and...

One of the newer members of the Empirical Labs family is the DocDerr, a 500 series multi-purpose tone enhancement module that houses six different sections of digitally controlled analog processing.  With over two years of meticulous development and...

The 73EQ JR is a fully featured Line Input module for the 500 Series. It not only shares the 3-band Equalizer with his big brother, the 1073, but also shares the same transformer coupled line preamp and Class A transformer balanced output stage. These...