Chameleon Labs 7720 Stereo VCA Compressor - User review - Gearspace.com
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Chameleon Labs 7720 Stereo VCA Compressor
4.75 4.75 out of 5, based on 3 Reviews

Bang for buck SSL style compressor with excellent features

18th January 2012

Chameleon Labs 7720 Stereo Bus Compressor by pjamin

  • Sound Quality 4 out of 5
  • Ease of use 5 out of 5
  • Features 5 out of 5
  • Bang for buck 5 out of 5
  • Overall: 4.75
Chameleon Labs 7720 Stereo VCA Compressor

Value Conscious Audio

Chameleon Labs marketing catch phrase is the rather drab 'value conscious audio'. Not exactly an attractive or brag worthy proposition. Yet, with an ever increasing amount of home-audio enthusiasts seeking the 'pro' sound, Chameleon Labs can't be criticized for its direct marketing approach. I picked up the 'value conscious' 7720 as an introduction to hardware bus compressors, to see if a) it offered any improvement on mixing into popular software SSL compressors (Waves SSL and Cyotomic 'The Glue') and b) to see if mixing into a compressor on the 2-bus suited my way of working. I was pleasantly surprised on both fronts.

We all know the story of Solid State Logic's legendary 80s console bus compressor, and we all recognize the sound of one. Manufactured completely in China, the 7720 is Chameleon Labs (mostly) faithful attempt at recreating this style of stereo VCA compressor with a few excellent features thrown in. The build quality is fairly good, although I do prefer the newer style aluminium knobs over my early run plastic ones. Switches feel solid, metering is fast and precise (although a little hard to see when not looking face on to the front of the unit). Popping the lid reveals a well laid out board with not much to fault. The compressor is built around the THAT corporation VCA used in other manufacturers VCA designs, including SSL. Design wise relatively few corners have been cut, and the specifications reveal acceptable levels of noise for such a competitively priced compressor:

Model 7720 Specifications

Input impedance: 50K Ohms (Balanced)

Output impedance: 200 Ohms (Balanced)

Sensitivity: 20 dBu maximum at 1 KHz

Noise: Less than -80 dBu

Total Harmonic Distortion: <0.5% at 1 KHz, +4dBu

Maximum Output Level: 20 dBu

Frequency Response: 20 Hz – 20 KHz +/- 0.5 dB.

Net Weight: 6.6 pounds

Obviously higher priced competitors such as the TK audio BC1, Alan Smart C1 & C2, and the SSL G-series rack compressor boast better noise and THD specs, but the Chameleon Labs is no slouch by any means. Combined with excellent features, and at half the RRP of the TK, quarter the RRP of the Alan Smart the Chameleon Labs 7720 hits the 'value conscious audio' mark bang on. Features wise, the 7720 boasts an excellent HPF feature with five selectable frequencies from 60 to 440hz, an external side chain, metering on input, output and overall gain reduction, and ratios from 1.5:1 through to a slamming 10:1. Blue LEDs are a little bright for my liking, as it is hard to see the faceplate settings in a dimly lit control room.

In Use

I found when strapped to the 2-bus that the 7720 added a definite 'glue' to my mixes. I usually used the 7720 at very modest settings, taking 3db or so off the peaks with a 1.5:1 ratio and the HPF in at 200Hz to avoid bass 'pumping'. It is a very neutral compressor and stays out of the way nicely while making my mixes sound more coherent. I was concerned about the frequency response of this unit, but was relieved to hear that what went in, generally came out. The 7720, while adding its gluey coherent sound to the mix, seemed to handle stereo material well without degenerating the balance or image. If anything, the image became ever so slightly narrower (or 'smaller') but not in way that was overly detrimental. Compared to both the Waves SSL comp and the Cyotomic 'The Glue', the 7720 offered a major improvement in imaging, with the software compressors making the mix noticeably 'smaller' sounding with equivalent settings.

Routing a drum stem through the 7720, I hit the settings hard with a 10:1 ratio. Punch crack and sizzle mixed back in under the stem in parallel added a nice flavour to rock-drums. The 7720 shines at this particular task and may well live strapped to the drum bus on future mixes. Again, Waves SSL and Cyotomic could not emulate this with nearly as much punch.

As an introduction to SSL style bus compression, the 7720 is no slouch. It is competitively priced, offers great features and remains neutral and stays out of the way if that is what is required. It offers a major improvement over plugin bus compression and excels at slamming drums. Recommended.

8th September 2012

Chameleon Labs 7720 Stereo Bus Compressor by Dot.

  • Sound Quality 5 out of 5
  • Ease of use 5 out of 5
  • Features 5 out of 5
  • Bang for buck 5 out of 5
  • Overall: 5
Chameleon Labs 7720 Stereo VCA Compressor

Before i got this compressor, I read a lot of reviews and everybody were praising this compressor, I was a bit skeptical about it since people also were praising ART VLA II which i found just ok, or even below that. Anyway I needed a bus compressor, so I decided to give it a try. I was on a budget, I didn't want to get plugin, hardware was my choice. I ordered it and plugged everything quick time, calibrated inputs and i was ready for testing. I passed few older mixes I did with SSL Waves compressor, using similar settings and i was impressed how big of a difference this thing gives you. Really nice smooth sound, it sounds "bigger" than plugin, and for the price it's really a tough opponent for bus compressors below $1000, matter fact there's not many below that price range. There's a lot of options above $1000 (SSL clones). Well but this unit is really great comp. If you're planning to get it, don't hesitate. It looks good, sounds good, and will do the work done.

i give it 100% not because it's the best bus compressor out there (which im sure it is not) but for $520 you can't go wrong with it. Even tho it's "made in china" it's built very well, it doesn't feel cheap at all.

- great sound
- feel of the knobs
- high pass filter
- side chain
- looks
- the cool blue light that illuminates the whole room

- metering VU is kinda small, i think original SSL type meter would'of been better.

5th October 2012

Chameleon Labs 7720 Stereo Bus Compressor by Bristol Posse

  • Sound Quality 4 out of 5
  • Ease of use 5 out of 5
  • Features 4 out of 5
  • Bang for buck 5 out of 5
  • Overall: 4.5
Chameleon Labs 7720 Stereo VCA Compressor

I've been playing with this compressor for about 6 months now and have enjoyed it immensely.
For the price you can't go wrong. A stereo rack mountable SSL style bus compressor for around $500.

Build quality is great, I have the newer version with brushed aluminum knobs and everything just feels smooth and solid in operation.
As others have mentioned, the only real let down is the VU meter which can be a little hard to read at anything other than right in front and close up.

Coming from the Waves SSL and PIE bus compressors this is a whole different animal. I always liked the waves offering until I had this. I find the life really stays in the sound with the 7720. by comparison the software comps seem to loose some of the high end and definitely don't have the same punch or width.

Running a mix through the 7720 vs Waves SSL comp at the same settings will sound significantly different. I prefer what the 7720 gives me and at this point 6 months in don't even bother comparing any more. I just go straight to the 7720.

I have used this on drum overheads with some success and on a Drum bus but it's too clean for what I want in drum bus comp (CL 7802 is great for this but that's a story for another review)

All in all for $500 this is a no brainer for me. It's only slightly more expensive than a name brand SSL plugin but you have a taste of the real thing with the extra capability of a HPF on the low freqs and a 1.5:1 ratio which is not available on the original. The only feature I really wold have liked to see was a blend control for simple parallel (like on the TK audio BC1) but for the price I'm more than OK in going without it

Score one for the cheaper compressor brigade

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