4.1. Audiocartela USB - Overview - 2 Microphone Preamps; Phantom Power; 2 Instrument Inputs; 2 Line Inputs; Air Mode; Auto Gain; Clip Safe; 2 Line Outputs; Headphone Outputs; Loopback; USB Type-C connectivity; USB 2.0 Protocol; Desktop Form Factor; Simultaneous I/O4 x 2 (including Loopback inputs); 24-bit/192 kHz A/D Resolution; Bus Powered (900mA); Supported sample rates - 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz Microphone inputs: Frequency Response - 20-20kHz ± 0.06dB; Dynamic Range - 116dB (A-Weighted);THD+N -100dB @ 8dB gain; Noise EIN -127dBu (A-Weighted); Maximum Input Leve - l16dBu; Gain Range - 69dB; Impedance - 3kΩ Line inputs: Frequency Response 20-20kHz ± 0.05dB; Dynamic Range 115.5dB (A-Weighted); THD+N-100dB @ 8dB gain; Maximum Input Level - 22dBu; Gain Range - 69dB; Impedance - 60kΩ Instrument inputs: Frequency Response - 20-20kHz ± 0.15dB; Dynamic Range - 113dB (A-Weighted); THD+N -80dB @ minimum gain; Maximum Input Leve - l12dBu; Gain Range 62dB; Impedance 1MΩ Line outputs (Balanced): Frequency Response 20-20kHz ± 0.02dB; Dynamic Range 120dB; THD+N -109dB; Maximum Output Leve - l16dBu; Impedance - 100Ω Headphone outputs: Frequency Response 20-20kHz ± 0.1dB @ 33Ω / 300Ω; Dynamic Range - 112dB @ 33Ω 115dB @ 300Ω; THD+N -99dB @ 33Ω -108dB @ 300Ω; Maximum Output Level 2.5dBu into 33Ω; 10dBu into 300Ω; Maximum Output Power 32mW into 33Ω; 22mW into 300Ω; Impedance 50Ω Analogue to Digital Converter: THD+N -110dB; Dynamic Range 120dB; Digital to Analogue Converter: THD+N -115dB; Dynamic Range 130dB (A-Weighted); Power USB 900mA; External (Optional) 4.5W (Similar Focusrite Scarlett 2i2 4th Gen)

4.2. Mixer Analog - Key Features: 6 mono channels with DuoPre preamps 3 stereo line-level channels 16 built-in digital effects (reverb, delay, chorus, etc.) 2x2 USB audio interface for recording and playback 3-band EQ with semi-parametric mid on mono channels 4 aux: 2 pre, 1 post, 1 FX +48V phantom power for condenser microphones Robust metal case, stage-ready Compatible with Cubase LE / most DAWs Technical Specifications Inputs: 6 × XLR/TRS combo (mic/linie); 3 × stereo TRS (linie); 1 × RCA stereo (2-track return) Outputs: 2 × XLR (main out L/R); 1 × TRS (headphones); 1 × stereo RCA (2-track out) EQ: Mono: 3 bands (80 Hz, mid variable 100 Hz–8 kHz, 12 kHz) Stereo: 2 bands (80 Hz, 12 kHz) Effects: 16 presets, TAP tempo, parametric control USB Audio: 2-in / 2-out, 16-bit / 44.1–48 kHz Windows and macOS compatible Power: 100–240V AC, 50/60 Hz ( Similar Allen & Heath ZED-12FX )

4.3. Mixer Analog - Key Features: 10 mono channels with DuoPre preamps 3 stereo line-level channels 16 built-in digital effects (reverb, delay, chorus, etc.) 2x2 USB audio interface for recording and playback 3-band EQ with semi-parametric mid on mono channels 2-band EQ on stereo channels 4 aux: 2 pre, 1 post, 1 FX Balanced XLR main outputs and headphone output +48V phantom power for condenser microphones Robust metal case, stage-ready Compatible with Cubase LE / most DAWs Technical Specifications Inputs: 10 × XLR/TRS combo (mic/linie); 3 × stereo TRS (linie); 1 × RCA stereo (2-track return) Outputs: 2 × XLR (main out L/R); 1 × TRS (headphones); 1 × stereo RCA (2-track out) EQ: Mono: 3 bands (80 Hz, mid variable 100 Hz–8 kHz, 12 kHz) Stereo: 2 bands (80 Hz, 12 kHz) Effects: 16 presets, TAP tempo, parametric control USB Audio: 2-in / 2-out, 16-bit / 44.1–48 kHz Windows and macOS compatible Power: 100–240V AC, 50/60 Hz (Similar Allen & Heath ZED-16FX)