The new Mercury 66 Studio Limiting Amplifier (Mk. III) is an ‘All Tube - All Transformer’, fully balanced, variable-bias limiter based on the most sought after product in this genre, the legendary Fairchild 660. This limiting amplifier is recognized as an essential tool for making great recordings.
The Mercury 66 Studio Limiting Amplifier uses a single push-pull stage of amplification which is transformer coupled input and output (XLRs) with no capacitors in the signal path) with a high control voltage. The result: the unit never produces any audible thumps, and has low distortion and noise under all conditions (either as a limiter or straight through amplifier). The Control amplifier is also fully balanced, transformer coupled in/out. The unit makes use of a very stable high current vacuum tube voltage regulator. It has ample and accessible input, threshold, attack, release time and metering controls allowing for convenience in the control room when making adjustments. The attack time is very fast and catches short transients. The release time of .3 to 25 seconds provides real flexibility: Three positions of the six available make the release time a function of program material, with fast recovery for short duration peaks and overall reduction of program level should the program level remain high. It can be used as a limiter or compressor. For example, use it as a 2 to 1 ratio compressor with a threshold 5 dB below average level, or as a peak limiter with a 20 to 1 ratio with threshold 10 dB above normal program level, or anywhere between these extremes.
One notable change on the Mercury 66 is the addition of the DC Adjust Control. On an original Fairchild 660 this was called DC Threshold and was on the rear of the unit (not accessible from front panel). Mercury put that control on the front panel and labeled it DC Adjust to not confuse the Threshold function. The DC Adjust lets you control DC (Direct Current) in part of the circuit to give the user more control of the functionality and level of compression.
Mercury 66 MK3 Limiting Amp Front Panel Controls
Input Gain, AC Threshold, Attack/Release, DC Adjust, Meter Zero (Trim), Stereo Link and Power on/off Switch. M66 Attack and Release
Mercury 66 MK3 Limiting Amp Times
- Position 1 - Attack [ Fast - 0.2 ] Release, in Seconds [ 0.3 ]
- Position 2 - Attack [ Fast - 0.2 ] Release, in Seconds [ 0.8 ]
- Position 3 - Attack [ Med. - 0.4 ] Release, in Seconds [ 2.0 ]
- Position 4 - Attack [ Slow - 0.8 ] Release, in Seconds [ 5.0 ]
- Position 5 - Attack [ Med. - 0.4 ] Release, in Seconds [ Auto: 2.0 peaks, 10.0 program ]
Mercury 66 MK3 Limiting Amp Specifications
- Transformers: 600 ohm Input and Output
- Gain: 7 db (no limiting)
- Frequency response: 40 Hz- 15 kHz +/- 1 db
- Noise: = -74 dB below OdBm
- THD: = < 1%
- Compression Ratio: 1:1 to 1:20
- Attack Time: 1] 0.2, 2] 0.2, 3] 0.4, 4] 0.8 5] 0.4 6] 0.2 ms
- Release Time: 1] 0.3, 2] 0.8, 3] 2 sec, 4] 5 sec, 5] auto 1, 6] auto 2
- Tubes: (1) 6BC8, (2) 6V6, 12BH7, 12AX7, EL34, 5AR4 or GZ34, 5751
- Rack Size: 3u
Following checkout you will receive a Paypal invoice if your order is in stock or readily available with the manufacturer. Your Paypal account , credit card or debit card will not be charged if your order is not in stock or available with the manufacturer. In stock orders are shipped within 1-2 business days (FEDEX tracking details provided). Un-stocked orders require a special order from the manufacturer and ship within 7-10 business days.
To ensure 100% customer satisfaction , we offer a 14 day return policy and price matching. Our knowledgeable staff are here to help with queries you may have about the , prices in Singapore , stock availability etc. We will help you to select from the best products available. Contact our experts to find the best product to suit your style or request more information about the .
- Buy products with confidence.
- We ship to all major regions in Singapore.
- Return to base repair or replacement (1 Year return to base).
- Please contact us for detailed information about our terms , conditions and warranty.
AudioBuy Singapore ship all stocked orders Monday to Friday. All online orders are carefully packed and insured before dispatch. Our customers are very important to us and we will work with you until final delivery to ensure you're completely satisfied.
|Condition||Sealed / New|
Contact us for stock availability , price quotes , expedited shipping quotes or to arrange a return of your (for the full purchase price of ). You may return most new, unopened items within 30 days of delivery for a full refund. AudioBuy are very proud to carry a large selection of gear. You demand quality, reliability, and innovative design from your gear, and we're here to help you find exactly what you need. We're glad to answer any questions you have and you can always depend on AudioBuy to give you the best possible value on musical instruments and accessories with responsive customer service.