Heritage Audio SYMPH EQ

Heritage Audio Symph EQ is a Master Bus Stereo Asymptotic Equalizer for musical instruments and mastering, with 2 x XLR Inputs, 2 x XLR Outputs, rackmountable.

Heritage Audio has released the rack-mounted two-channel analog equalizer Symph EQ, designed for use with individual instruments during mixing as well as with finished compositions in the mastering section.

Symph EQ features a fully discrete Class A circuit with low noise and is equipped with Carnhill input/output transformers. Each channel of the model has an adjustable cutoff frequency for both low and high filters, along with two sections for adjusting low and high frequencies. Both sections can be used for both boosting and cutting the signal. The frequency range for low frequencies is 20 – 470 Hz, and for high frequencies, it is 8 – 24 kHz. The model supports equalization in both L/R and Mid/Side modes. Connectivity options include 2 XLR inputs and 2 XLR outputs.

SYMPH EQ Features

• Custom Carnhill Oxford input transformers
• Custom Carnhill St Ives output transformers
• A high-end, 73-style Class A output stage
• All controls use high-quality rotary switches for 0.5dB precision equalizing
• Mid-side processing allows for precise center bass management and high boosting hard panned sources without affecting center ones such as vocals, snare, etc. Side high-pass filter turns into elliptical type when in M/S, as implemented in vintage disk cutters
• Stereo and M/S inputs and outputs, all balanced and ground free (unbalanced compatible) on gold plated XLRs. ON M/S or stereo mode and BP-L/BP-R, individual hard BYPASS per channel
• Fully manufactured in the EU

SYMPH EQ Specifications

• Carnhill based, transformer coupled balanced inputs and outputs for added character and vintage vibe.
• 73 style Class A output stages bring the desired 73 sound to your mix or instrument buses.
• Stepped controls for easy recall of settings.
• Input impedance: 10 KΩ bridging. Input is transformer balanced and floating.
• Output impedance: Less than 75 Ω, transformer balanced and floating, to drive a load of 600 Ω (factory terminated).
• Maximum output: Greater than +26 dBu into 600 Ω.
• THD: Less than 0.025 % at 1 kHz, less than 0.05 % at 100 Hz.
• Frequency response: 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB).
• Noise: Less than -89 dBu, EQ flat.

Asymptotic Equalizer Section:

• Hi Frequency shelving: Frequency selectable 8, 10, 12, 15, 20 and 24 kHz.
• Boost / Cut: 10.5 dB maximum, in steps of 0.5 dB.
• Lo Frequency shelving: Frequency selectable 20, 60, 110, 220, 360 and 470 Hz.
• Boost / Cut: 10.5 dB maximum, in steps of 0.5 dB.

Filter Section:

• 12 dB/octave high pass filter, -3 dB point selectable at 15, 20, 47, 82 and 160 Hz.
• 12 dB/octave low pass filter, -3 dB point selectable at 10, 12, 18, 22 and 30 kHz.
• Side filter automatically turns into elliptical topology when M/S is engaged, as with disk cutters, at 6 dB/octave.

Dimensions SYMPH EQ (W x H x L):

• 482 mm x 44 mm (1 Rack unit) x 184 mm
• Weight: 3.705 Kg