ASP4816-HE

Class-A Discrete Microphone Preamps
Sixteen discrete Class-A microphone preamps based on the ASP8024-HE design provide transparent signal capture with generous headroom for detailed recordings.

Flexible In-Line Architecture
Separate short and long fader signal paths allow microphone inputs and DAW returns to be controlled simultaneously, simplifying tracking, monitoring and mixing.

Heritage Edition Mix Bus
Discrete John Hardy 990C+ op-amps provide low-noise analogue summing with detailed transient response and punch.

Carnhill Transformer Drive
Switchable XFRMR Drive engages two Carnhill output transformers to introduce additional analogue colour, weight and low-frequency punch.

Low Bump and High Lift Processing
Dedicated mix bus processing adds subtle low-frequency weight and high-frequency air when the transformer drive circuit is engaged.

Four-Band Channel Equalization
Switchable high and low shelving filters combine with two fully parametric mid bands for broad tonal shaping and precise frequency adjustments.

Independent EQ Path Assignment
High/low and mid EQ sections can be assigned independently to the short or long fader paths, allowing different processing during recording and monitoring.

Extensive Multitrack Routing
Sixteen recording buses provide flexible signal routing to external recording equipment, with individual bus output trims for level adjustment.

Eight Analogue Subgroups
Subgroup faders with dedicated inserts, panning, solo and mute controls allow multiple channels to be combined and processed together.

Integrated Stereo Bus Compressor
Adjustable threshold, ratio, attack, release and makeup gain provide stereo mix dynamics control, with Bass Expand to reduce low-frequency pumping.

Flexible Auxiliary and Cue Sends
Six auxiliary sends and two dedicated cue sends support external effects processing and independent musician monitoring mixes.

Dedicated Stereo Effects Returns
Four stereo return channels provide additional inputs for external processors, with routing to the stereo mix, multitrack buses and foldback system.

Comprehensive Control Room Monitoring
Switch between four stereo monitor outputs with independent alternate speaker trims, mono checking, dim and individual speaker mute controls.

Talkback and Foldback Communication
Integrated talkback routing and two independent stereo foldback outputs help maintain communication and provide personalized monitoring for performers.

Detailed Metering and Studio Integration
High-resolution LED metering, channel inserts, balanced connections and a dedicated external monitor controller integration port support efficient studio operation.

General Specifications
Console Type: Analogue in-line recording and mixing console
Microphone Preamplifiers: 16 Class-A discrete preamps
Channel Architecture: Dual short fader (SF) and long fader (LF) signal paths
Multitrack Buses: 16
Analogue Subgroups: 8
Auxiliary Sends: 6
Cue Sends: 2 (Cue A and Cue B)
Stereo Effects Returns: 4
Additional Line Inputs: 8 via subgroup insert returns (Line 17-24)
Stereo Mix Bus: Discrete John Hardy 990C+ op-amps
Transformer Processing: 2 Carnhill output transformers

Audio Performance
Microphone Input to Mix Output Frequency Response: +0/-0.3 dB, 20 Hz to 20 kHz, at 6-40 dB gain
Line Input to Mix Output Frequency Response: +0/-0.3 dB, 20 Hz to 20 kHz, at 0 dB gain
Microphone Input THD + Noise: Less than 0.005% at 1 kHz, +20 dB output
Line Input THD + Noise: Less than 0.005% at 1 kHz, +20 dB output
DAW/Tape Input THD + Noise: Less than 0.003% at 1 kHz, +20 dB output
Microphone CMRR: 70 dB at minimum gain, 75 dB at maximum gain
Maximum Microphone Input Level: Greater than +21 dBu at minimum gain
Maximum Line Input Level: +30 dBu at minimum gain
Maximum Insert Return Level: Greater than +21 dBu
Nominal Operating Level: +4 dBu (0 VU)

Input Channel Controls
Microphone Gain Range: +6 to +60 dB
Line Input Gain Range: -14 to +40 dB
DAW Input Trim: ±15 dB
Phantom Power: +48 V, individually switchable
Polarity Reverse: Switchable
High-Pass Filter: Switchable
Mic/Line Input Insert: Switchable send and return
DAW Input Insert: Switchable send and return
FLIP Function: Exchanges Mic/Line and DAW sources between short and long fader paths
Channel Fader Gain: Up to +10 dB
Bus Master Trim Range: ±10 dB

Channel Equalization
Equalizer Type: Four-band analogue EQ
HF Band Type: Shelving
HF Frequency Selection: 10 kHz / 18 kHz
HF Gain Range: ±15 dB
LF Band Type: Shelving
LF Frequency Selection: 50 Hz / 100 Hz
LF Gain Range: ±15 dB
High-Mid Band Type: Fully parametric
High-Mid Frequency Range: 450 Hz to 20 kHz
High-Mid Gain Range: ±15 dB
Low-Mid Band Type: Fully parametric
Low-Mid Frequency Range: 50 Hz to 1.5 kHz
Low-Mid Gain Range: ±15 dB
Mid Band Q Range: 0.65 to 3.8 (approximately 2 to 0.4 octaves)
EQ Section Assignment: Independent HF/LF and MID switching between short and long fader paths
EQ Bypass: Independent HF/LF and MID section switching

Stereo Bus Compressor
Compressor Type: Analogue stereo mix bus compressor
Threshold Range: -20 dBu to +20 dBu
Compression Ratios: 2:1, 4:1, 10:1
Attack Range: 0.1 to 30 ms, 6 steps
Release Range: 0.1 to 2.4 seconds, 5 steps plus Auto
Makeup Gain: Up to 40 dB
Bass Expand: 350 Hz high-pass filter in sidechain
Compressor Bypass: Switchable
Gain Reduction Meter: Analogue meter
Signal Path Position: After stereo mix insert, before master fader

Heritage Mix Bus Processing
Summing Amplifiers: 2 discrete John Hardy 990C+ op-amps
Transformer Drive: Switchable Carnhill transformer stage
Transformer Quantity: 2
Low Bump Frequency: Approximately 60 Hz
High Lift Frequency: Approximately 20 kHz
Low Bump and High Lift: Operate when XFRMR Drive is engaged
Processing Position: Before stereo mix insert and bus compressor

Routing and Auxiliary Processing
Multitrack Routing: 16 buses, selectable through 8 routing switches and SHIFT
Subgroup Outputs: 8
Subgroup Inserts: 8 send/return pairs
Auxiliary Outputs: 6 plus Cue A and Cue B
Auxiliary Source Selection: Short or long fader signal paths
Auxiliary Send Modes: Pre-fader or post-fader
Auxiliary Linking: Aux 3 and 5 to Aux 1; Aux 4 and 6 to Aux 2
Stereo Effects Return Trim: ±20 dB
Stereo Return Routing: Stereo mix, multitrack buses and foldback A/B
Subgroup/Additional Line Input Selection: Shared subgroup insert return connections

Control Room and Monitoring
Control Room Speaker Outputs: 4 stereo pairs (Main, Alt 1, Alt 2, Alt 3)
Alternate Speaker Level Trims: Individual trims for Alt 1, Alt 2 and Alt 3
Control Room Sources: Stereo Mix, DAW, EXT 1, EXT 2
Monitor Controls: Mono, Dim, Left Cut, Right Cut, Master Cut
Dim Attenuation: 15 dB
Studio Speaker Outputs: 1 stereo pair
Foldback Outputs: 2 stereo pairs
Foldback Source Selection: EXT 1, EXT 2, Control Room, Cue A, Cue B
Headphone Output: Dedicated output on master meter pod, sourced from Alt 3
Solo Modes: PFL, AFL, Solo In Place
Solo in Front: Adjustable solo-to-mix balance
Talkback Microphone Input: XLR with +48 V phantom power enabled by default
Talkback Destinations: Multitrack buses, studio loudspeakers, artist foldback
Remote Talkback Switching: Footswitch connections for studio loudspeakers and artist foldback

Metering and Oscillator
Channel DAW Meters: 20-segment peak meters
Channel Mic/Line Meters: 3-segment peak meters
Subgroup Meters: 8 × 20-segment peak meters
Stereo Master Meters: 2 × 30-segment peak meters
Channel Meter Source Switching: Mic/Line and DAW
Oscillator Frequencies: 40 Hz, 1 kHz, 10 kHz, 15 kHz
Oscillator Routing: Multitrack buses 1-16 or stereo mix bus
Oscillator Output Level: Adjustable

Connectivity
Microphone Inputs: 16 × XLR
Line Inputs: 16 × TRS
DAW Returns: 16 × TRS
Channel Mic/Line Inserts: 16 × TRS send/return pairs
Channel DAW Inserts: 16 × TRS send/return pairs
Stereo Effects Returns: 4 × stereo TRS pairs
Multitrack Bus Outputs: 2 × DB25 (8 channels each)
Subgroup/Line 17-24 Outputs: 1 × DB25
Subgroup Insert Sends and Returns: 8 × TRS pairs
Auxiliary/Cue Outputs: 8 × XLR
Control Room Speaker Outputs: 4 × stereo XLR pairs
Studio Speaker Outputs: 1 × stereo XLR pair
Foldback Outputs: 2 × stereo XLR pairs
Monitor Inputs: 3 × stereo XLR pairs
Stereo Mix Outputs: 3 × stereo XLR pairs
Stereo Mix Insert: Stereo TRS send/return connections
Integration Port: DB25, Tascam-standard pinout
Integration Port Signals: Ster