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Thermionic Culture The Phoenix SB with Standby Switch and Sidechain HPF
Thermionic Culture Phoenix SB Front
Thermionic Culture Phoenix SB Rear
Thermionic Culture Phoenix SB Top Left
Thermionic Culture Phoenix SB Bottom Right
Thermionic Culture Phoenix SB Rear

Thermionic Culture Phoenix SB

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Thermionic Culture The Phoenix SB Valve Compressor
100% fully functional. Includes power cable. Excellent shape with only very minor signs of wear. Retails for $4999 new, save a bunch here.

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- All valve signal path and side chain, point to point hand wired in England.
- Subtle control with "soft knee" compression, but more compression effects when pushed hard.
- Continuously variable attack, release and threshold controls.
- Stereo link for mix buss compression.
- Side chain filters to enable compression of all frequencies except bass.
- Flat frequency response over full audio range and beyond.
- Very low phase shift and harmonic distortion (unless pushed hard).
- Push-pull design gives a natural warm sound with high output level.
- Output trim controls for fine adjustment or lower level operation.
- Balanced ins and outs with custom made Sowter transformers.
- Bypass switch on each channel removes all electronics.
- Standby switch to prolong valve life.
- Distortion effects can be created with Standby on.

The Phoenix SB is now the standard production version of the Phoenix compressor. Alongside the now classic circuit design of the original Phoenix, it incorporates the side chain filter controls from the previous standard Phoenix SC model with the new addition of an HT standby switch.

The additional HT Standby switch allows the user to put the Phoenix into a low power standby mode that is designed to increase the life of the unit's valves and capacitors. When first switching on, or if the unit's not in use for a while, have the Standby on. Switch off Standby and it will instantly come back to full life.

We have also placed the meter zero controls on the front panel for much easier access. Both meters should read "0" when the Phoenix is off standby and not compressing. They can be adjusted easily by any user without harm to the unit.

The side chain filters can be used to cut the Phoenix's compression response to bass frequencies. The filter operates below either 150Hz or 300Hz on each channel and when stereo link is engaged the filters operate at the average of the two sides. This enables the user to choose from 5 filter frequencies when in stereo operation.

The Phoenix is well known for its smooth "soft knee" compression characteristic and excellent specifications. This means that it can be used as a compressor that will not harm your signal quality, whilst subtly controlling dynamic range. It is also possible to drive the unit harder to produce harmonic distortion and higher ratio compression if desired. Many users have found these features bring life to mixes or individual instruments, and control vocals, with a natural "warm" quality.

Contrary to the above, users have found that if the unit is operated in standby mode (it still passes audio) a "symmetrical" distortion occurs, not unlike that produced by overloading analogue tape. Perhaps this fact alongside an exaggerated compression curve lends to the Phoenix in standby mode another dimension.

Thermionic Culture Phoenix Manual
Thermionic Culture Phoenix Spec Sheet
Thermionic Culture Phoenix Brochure
Thermionic Culture Phoenix Recall Sheet
Thermionic Culture Phoenix SB Rear
Thermionic Culture Phoenix SB Top Left
Thermionic Culture Phoenix SB Bottom Right