Description
This is a used amp. The item pictured is the one you will receive. It has been tested and gone over by the experts at our shop to ensure it’s working properly and is free of issues, unless otherwise noted in this listing. Please read the description carefully and check over all photos for condition and wear. We do our best to describe all items as best as possible and note any wear we find, but please be considerate that it is a used piece and it won’t be perfect. We pack all items with care when shipping them. If you have any questions about this or any other piece of gear we have, please let us know and we’ll be happy to help!
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Condition Notes:
– Condition: 9/10
– Any wear of note: There’s a couple of extremely light and minor scuffs or marks, but nothing at all glaring. There is one highlighted in a photo but most of the wear doesn’t really show up in photographs that well because it’s so light. The amp is really in incredible shape overall and in full working order! It was blatantly very well taken care of and maintained. No weird smells or anything.
– Other notes: Everything Carr makes is absolutely fantastic. Always exemplary craftsmanship with nothing but amazing and inspiring tones. This Mercury is no exception! It’s the original 8 watt version and is truly the perfect recording amp, and very ideal for at home use! The built in attenuator allows you to really drive the tubes and get lots of the rich harmonic overtones we all love from a cranked amp, while keeping the volume wherever you want it. And the Boost knob and Cut switch allow for even more versatility, and really come in handy with how they react when using the attenuator and pushing the amp. It’s really an amazing sounding amp that seems simple on the surface, but has tons of tones under the hood! Includes the pictured padded cover only (power cable is hardwired).
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Tube Layout:
Power Tubes: 1x EL34
Preamp Tubes: 2x 12AX7, 1x 12AT7
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From Carr Amps:
Mercury
The Mercury is an astonishingly versatile amplifier—especially when it comes to home and studio use. The unique built-in attenuator allows full output tube overdrive to be used at real world home volumes, freeing you to enjoy the visceral sound and feel of a cranked, overdriven power section. Along with this ability, the Mercury offers beautiful 60s American clean tones a combination rarely found in any amplifier.
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Volume – Adjusts the loudness of the amplifier.
3 Position Boost –
- Position 1: 60s American sound with great warmth
- Position 2: Increases gain by defeating the tone controls (Treble and Bass) while trimming low end for a focused overdrive tone
- Position 3: Further increases gain from the tone stack and reverb circuit while the low-end focus is refined. Tone controls are defeated.
Treble – Varies the top end from dark to bright when Boost position 1 is selected. The Treble control is bypassed on Boost positions 2 and 3. Use the Cut Switch (see below) to adjust the treble with Boost positions 2 and 3.
Bass – Varies the low end from lean to full when Boost position 1 is selected. The Bass control is bypassed on Boost positions 2 and 3.
Reverb – Controls the amount of reverb from none to deep and lush.
4 position Attenuator (“Output”) – Selects power output to the speaker. The Mercury is always making its full 8 watts, but by selecting 8, 2, ½, or 1/10* watt, the amount of power that reaches the speaker is varied. The lower power settings allow you to achieve the tonal characteristics of high volume control settings at quieter listening levels.
Cut Switch – Rolls off the high frequencies for a more mellow tone when the switch baton is down. This works especially well when Boost positions 2 and 3 are in use.
Standby – Set amp to Standby (switch baton down) before turning on the power switch (see On-Off-On below). After 1 minute of warm up, switch the Standby baton up. The amp is ready to be played. Using the Standby switch every time the amp is turned on will prolong
On – Off – On – Selects between two ON positions and the OFF position (middle). The two ON’s are wired in opposite phase of each other. If you receive a shock from another piece of equipment (a microphone or another amp) that is not properly grounded, or if you hear static, switching to the opposite ON may solve the problem. This is sometimes called “switching polarity”.
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Bottom Panel
Fuse – In the unlikely event that a tube fails, the amp is protected by a 1 Amp slow blow fuse for 120v and 100v (North America and Japan) models and a 0.5 Amp slow blow fuse for 220v and 240v (Asia and Europe) models. Please consult us or a qualified tech for assistance in the event of a fuse blowing. The fuse is located on the bottom of the chassis by the power cord.
Speaker output jack – The Mercury is designed for 8-ohm loads. Maximum power and tone will be realized when running into an 8-ohm speaker or cabinet. Using a speaker configuration resulting in more or less than an 8-ohm load can damage the Mercury when using attenuator settings 2, ½, or 1/10*. On the 8 watt attenuator setting (full power), the Mercury can drive a non-8-ohm load (4 – 16 ohms); however, you will loose a little power from the mismatch, and the power tube will have to work a bit harder and thus age faster. The speaker output jack is located to the left of the power tube on the back of the chassis.




















