Hand Crafted Labs Thermos Mastering EQ 2025 - Black

The Handcrafted Labs Thermos Equalizer is a 4-Band Parametric

Equalizer inspired by the Barry Porter type EQ with a number of exclusive added design features, top class input and output transformers.

Each band has a Boost/Bypass/ Attenuation switch and a multiplier switch to double the frequency selected (divider for High Band) as well as switchable Q and 9 dB of either boost or attenuation in 24 steps switch. Center section incorporates High Pass filter with adjustable frequencies and slope (six fixed frequencies and 12dB/24dB to octave curve selector) and full Mid-Side coder/decoder with M-S solo buttons.

The frequency Response measured with all EQ bands ON set flat, 10Hz to 100kHz +0.2/-3dB.

The Handcrafted Labs Thermos is incredibly surgical yet very musical and transparent.

Special Note: Two recent updates to the Thermos (as of 2023), put M/S mode on a single button, and there are no longer separate outputs for the Transformer and Transformerless outs. They utilize the same outputs and you can switch between transformer and transformerless via a button on the front panel! M-S circuit operates on transformers. When transformerless output is engaged, the Thermos will only operate in stereo mode.

Handcrafted Labs Thermos Equalizer

Specifications

Input Impedance: 24 Ohm

Output Impedance: 600 Ohm (transformer) / 500 Ohm (transformerless)

Nominal Level: +4 dBu

Maximum Level: +22 dBu

M/S Coder Circuitry: Transformer based

Frequency Response: 10 Hz...75

kHz. +/- 1 dBu

Signal to Noise: -91dBu

Harmonic Distortion at 1K on +16 dBu: less then 0.1%

Power/Voltage: 115/230V 50-60Hz