Mesa Boogie Custom Rosette 300 2x8 Acoustic Guitar Amp, Emerald, Wicker
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The Rosette is a dedicated acoustic instrument platform designed not just for acoustic guitars, but also for mandolin, ukulele, violin/fiddle, dulcimer, cello, upright bass and other uniquely acoustic instruments. Unlike electric guitar amplifiers that offer enhancements and/ or re-voicings, Mesa believed that there was no reason to "enhance" the sound of an acoustic instrument, but rather… simply reproduce it.
FRONT PANEL - Architecture straight from high-end recording console designs. Mesa chose dedicated, time-tested designs, proven over decades of great recordings, to deliver the uncompromised, accurate truth.
In the MIC Input of Channel 1, a rugged, professional XLR jack uses a dual discrete transistor pair for the trans-conductance Input stage. Because microphones are low impedance transducers, the noise current specification must be at the top of the design list for the best noise performance and Tone.
Channels 1 and 2 feature input stage circuitry optimized for the impedance requirements of today’s (and yesterday’s) popular acoustic guitar pickups. A current source biased FET input stage was selected for this application as high impedance transducers require the noise voltage specification be the first consideration for optimal performance and Tone.
MUTE and PHASE switches accompany each channel’s Input features. Channel 1’s Input options are selected by the MIC/LINE switch, which determines the Input architecture.
GAIN adjusts the input gain level for each channel and the FX SEND determines the amount of that signal to be routed to the internal Effects Processor or the SEND of the EXTERNAL EFFECTS LOOP.
The HI-PASS Filter reduces or eliminates low-end feedback and tone issues before they can arise or be exacerbated with unintentional overuse of the EQ section. HI-PASS allows you to dial out the over-resonant, tubby frequencies that often create unwanted feedback, especially in bigger, more resonant guitars and acoustic instruments.
The professional 4-Band EQ Section provides the same degree of shaping power found in upscale recording or live sound consoles and together with the optimized INPUT circuitry, creates two impressive Channel Strips for amplifying acoustic instruments. The separate LOW and HIGH semi-parametric MID Bands allow specific control over a wide range of frequencies and can easily overlap if needed.
Mini LED Indicators in the upper right corner of the Front Panel alert you to: 1) clipping the power section and the LIMIT circuit is being activated (YELLOW). 2) the amp overheating due to excessive Output or settings for prolonged periods (RED). 3) the amp’s Pilot light indicating the AC MAINS Power has been switched on (BLUE).
The on-board Effects Suite includes three effects choices: ROOM REVERB, HALL REVERB and REVERB AND CHORUS. These effects programs create many ways to add spatial enhancement to the sound of your instrument while the PARAMETER Controls provide unique adjustment of specific effect functions in each of the three modes. The FX MASTER control determines the overall mix of the effects to the dry signal to achieve the desired dry/wet blend.
Channel Mute Footswitch Jack
FX Loop Send and Return Jacks
Direct Output Section
Power: 300W @ 4 ohms
Speakers: 2 x 8" Rosette 150 Neodymium speakers, 1 x Neo dome tweeter (3-way level switch)
Inputs: 1 x XLR (mic), 2 x 1/4" (instrument), 1 x 1/4" (aux in)
Outputs: 3 x XLR (direct out), 1 x 1/4" (headphones), 1 x 1/4" (speaker out)
Effects Loop: Yes
EQ: High-pass filter, 4-band EQ (semi-parametric mids)
Footswitch I/O: 2 x 1/4" (mute, FX bypass)
Footswitch Included: No
Dimensions: 12.25" H x 18" W x 13.25" D
Weight: 30 lbs.
Manufacturer Part Number: 1.AR2.V11