Designed for pro audio purposes, the JoeCo Cello is a 22-input and 4-output USB 2.0 audio interface that can record audio up to 384 kHz-a sample rate higher than many interfaces currently on the market.
Offering mastering-grade features such as a high 127 dB dynamic range, ensuring accurate monitoring for loud and quiet song dynamics. For mastering engineers, there is adjustable ADC and DAC filtering, so you can tailor the cutoff up to the Nyquist frequency to suit your instrument, style of music, and predilections. Monitor through your loudspeakers, or when recording, use the two headphone outputs with independent, low-latency monitor mixes.
Two microphone inputs are on hand, each offering 80 dB of gain and giving you phase reverse, pads, high-pass filtering, 48V phantom power, and balanced line-level insert sends for outboard gear. Should you want to add some air to mic signals, you can do so with the selectable Top+ feature, which boosts the trebles a little to add high-frequency life.
Preamps were made in house by JoeCo. You ll find inputs for your Hi-Z instrument (such as an electric guitar) as well as balanced line signals. A talkback mic is built into the Cello. You ll find MIDI I/O for your favorite controllers and compatible analog synths.
Digital connections are on hand for S/PDIF I/O and ADAT. Sync the device to your favorite clock through the BNC wordclock input. Use the JoeCoControl app for Mac and Windows platforms to control all the aspects of the unit. With all these features and more, the JoeCo Cello can be a centerpiece for small production studios or mix rooms.
Key Features at a Glance
- Class compliant USB 2.0 interface to Mac or Windows
- MIDI in / MIDI Out
- Talkback mic built-in
- Operation at up to 384 kHz
- Converters with 125 dB dynamic range
- JoeCo clock algorithms deliver excellent jitter performance
- Discrete analog mic pres with separate line inputs
- Mastering grade monitor outputs
- Built-in talkback microphone and monitoring control
- User-selectable ADC filtering options
- JoeCoControl app for MacOS and Windows
JoeCo Cello Specs
| Form Factor | Desktop |
| Display | 1 x LCD |
| Channels of I/O | 22 Input / 4 Output at 384 kHz |
| Maximum Sampling Rate | 384 kHz / 32-Bit |
| Number of Microphone Preamps | 2 Preamps |
| Built-In Microphone | None |
| Expansion Slots | None |
Signal Processing
| Gain/Trim Range | Mic Inputs: +5 dB to +78 dB Line Inputs: -10 dB to +65 dB Hi-Z Inputs: 20 dB |
| High-Pass Filter | None |
| Solo/Mute | None |
Connectivity
| Analog Audio I/O | 2 x Combo XLR-1/4" TRS Balanced Mic/Line Input 1 x 1/4" TRS Unbalanced Hi-Z Input 2 x 1/4" TRS Balanced Line Input 2 x 1/4" TRS Balanced Line Output 2 x 1/4" TRS Balanced Monitor Output 2 x 1/4" TRS Unbalanced Headphone Output |
| Phantom Power | 48 V (Selectable on Individual Inputs, on 2 Channels) |
| Phantom Power Current | ‰¤ 10 mA per Channel |
| Digital Audio I/O | 1 x BNC Coaxial S/PDIF Input (Word Clock Support) 1 x BNC Coaxial S/PDIF Output (Word Clock Support) 2 x TOSLINK Optical ADAT / S/PDIF Input |
| Host Connection / USB | 1 x USB-B |
| Host Connection Protocol | USB 2.0 |
| Sync I/O | 1 x RCA Coaxial Word Clock Input (Shared with S/PDIF) 1 x RCA Coaxial Word Clock Output (Shared with S/PDIF) |
| MIDI I/O | 1 x DIN 5-Pin Input 1 x DIN 5-Pin Output |
Performance
| Frequency Response | Mic Inputs: 10 Hz to 70 kHz ±0.3 dB Hi-Z Inputs: 10 Hz to 20 kHz ±0.2 dB Line Inputs: 10 Hz to fs/2 ±0.3 dB Monitor Outputs: 10 Hz to fs/2 ±0.3 dB Headphone Outputs: 10 Hz to fs/2 ±0.3 dB AD/DA Converters: 10 Hz to fs/2 |
| Maximum Input Level | Mic/Line Inputs: +22 dBu Mic/Line Inputs: +30 dBu (with Pad) Hi-Z Inputs: +24 dBu Line Inputs: +22 dBu |
| Maximum Output Level | Insert Outputs: +22 dBu Monitor Outputs: +22 dBu at 0 dBFS Headphone Outputs: +17 dBu at 0 dBFS |
| Impedance | Mic/Line Inputs: > 2.4 Kilohms (Mic Level) > 12 Kilohms (Line Level) Hi-Z Inputs: 1 Megohm (Unbalanced) Line Outputs: 200 Ohms (Balanced) Line Inputs: 10 Kilohms (Balanced) Monitor Outputs: 200 Ohms (Balanced) Headphone Outputs: 200 Ohms |
| Dynamic Range | Monitor Outputs: 127 dB Line Inputs: 120 dB Headphone Outputs: 108 dB |
| SNR | Mic/Line Inputs: 117 dBA Hi-Z Inputs: 113 dB |
| THD+N | Mic/Line Inputs: -103 dB Hi-Z Inputs: -107 dB Line Inputs: -106 dB Monitor Outputs: -104 dB Headphone Outputs: -95 dB / 0.0018% |
| Crosstalk | Mic/Line Inputs: < 90 dB |
| EIN | Mic Inputs: -127 dBu |
| CMRR | Mic/Line Inputs: > 80 dB |
Digital Audio
| Sample Rates | Up to 384 kHz (AD/DA Conversion) |
| Sample Rate Conversion | None |
| Latency | 1.2 ms at 44.1 kHz (Dependent on Buffer Size, Input to Output) 1.1 ms at 48 kHz (Dependent on Buffer Size, Input to Output) 0.458 ms at 88.2 kHz (Dependent on Buffer Size, Input to Output) 0.417 ms at 96 kHz (Dependent on Buffer Size, Input to Output) 0.229 ms at 176.4 kHz (Dependent on Buffer Size, Input to Output) 0.209 ms at 192 kHz (Dependent on Buffer Size, Input to Output) 0.042 ms at 354.8 kHz (Dependent on Buffer Size, Input to Output) 0.038 ms at 384 kHz (Dependent on Buffer Size, Input to Output) |
| Sync Sources | ADAT |
Compatibility
| OS Compatibility | macOS Windows *As of November, 2021: Check with manufacturer for the most up-to-date compatibility |
| Included Software | None |
| Required Hardware | USB 2.0 Port |
Power
| Power Requirements | AC/DC Power Adapter (Included) |
| AC/DC Power Adapter | 5 VDC at 1.5 A (Included) |
Physical
| Dimensions | 8.7 x 5.91 x 2.83" / 22.1 x 15.01 x 7.19 cm |
| Weight | 2.4 lb / 1.1 kg (without Accessories) |
In the Box
- JoeCo Cello 384 kHz USB 2.0 Audio Interface with 22 Inputs and 4 Outputs
- USB 2.0 Type-A to Type-B Cable (5.9` / 1.8m)
- Wall Charger
- 2-Year Manufacturer Warranty
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