Pedaleira usada em estúdio e concertos.
Algumas marcas de uso mas tudo meramente estético. A pedaleira encontra-se perfeitamente funcional.
Inclui o Boss BT-Dual Bluetooth Adaptor, que permite alterar presets através da aplicação Android.
Vendo por ter adquirido novo material recentemente e já não dar uso.

Boss ME - 90 Specs:
Compact guitar processor with direct access
Eleven built-in AIRD amp models and 60 different effects from the GT-1000
36 Preset and 36 user patches
Manual mode for pedalboard-like operation and memory mode for switching complete patch setups
Load up to 3 user speaker IRs
Send/return loop for external pedals
Edit parameters, swap amp and effect types and more with BOSS Tone Studio
Controls: Preamp type, Gain, Bass, Middle, Treble, Level, Reverb, Comp/fx1 type, Sustain/Sens/-1oct, Attack/Tone/-2oct/depth, Level/Peak/Direct, OD/DS type, Drive, Tone, Level, Mod type, Rate/Key, Depth/Harmony, E.level/Resonance, Delay type, Time, Feedback, E.Level, Output level, Pedal FX type
Push buttons: Exit, Write, CTL, Edit
Switches: Bank Down/Amp, Bank Up/Eq, CTL/REV, Memory/Manual, 1/Comp, 2/OD/DS, 3/Mod, 4/Delay, Pedal FX, GT. Amp/Line, Power
LED: 2 characters
Input: 6.3 mm jack
Output (L/Mono, R): 2x 6.3 mm jack
Send & Return: 2x 6.3 mm jack
Headphone jack: 3.5 mm stereo jack
USB Type-C
Power supplyconnection: Barrel connectort 5.5 x 2.1 mm, centre negative
Power consumption: 190 mA
Powered by 4 x AA batteries or a DC mains adapter
Dimensions (W x D x H): 443 x 220 x 67 mm
Weight: 2.9 kg

Boss BT Dual Bluetooth Adapter Specs:
Compact adapter compatible with BOSS and Roland products, adding wireless Bluetooth audio and MIDI options
Once installed, the respective product can be connected to a Bluetooth-enabled device, such as a smartphone or tablet, and communicate wirelessly
The actual wireless functionality available depends on the respective product and model
Potential functions include streaming music via Bluetooth audio, controlling functions via Bluetooth MIDI and more
Supports the Bluetooth audio and Bluetooth MIDI communication standards (BLE-MIDI).
Quick and easy installation
Power is supplied by the host product
Compatible devices:

BOSS Cube Street II
GX-10 Pedalboard
BOSS GX-100 Pedalboard
BOSS ME-90 Pedalboard Series
BOSS Katana Gen 3 Amp Series
BOSS Katana Bass Amp Series
BOSS Dual Cube LX Series
BOSS AC-22LX
Roland TD-02