• 10:1 Limiter and 3:1 Compressor ratios
• All-tube audio path uses 5751 (gain) and 6922 (White Follower Output) dual triodes each channel
• Balanced Manley IRON® transformer-coupled XLR Inputs
• XLR impedance-balanced outputs
• BYPASS switches and AUTOMUTE with warm-up delay
• Large illuminated VU meters read Gain Reduction or Output levels
• STEREO LINK
• Side-Chain High-Pass Filter
• Standby Power Consumption: 0.5 Watts
• Universal internal power supply operates worldwide 90-250V~AC 50/60Hz
• ALL-TUBE audio path using a 5751 for gain, 6922 White Follower output tube (one each per channel)
• Silent Conductive Plastic GAIN control.
• Balanced MANLEY IRON Transformer coupled XLR input.
• Input impedance: 14 kOhms
• Maximum input level: +18dBu or 4.8V RMS @ 0.01% THD
• Hi-current White Follower Impedance Balanced XLR output.
• Output impedance=150 Ohms
• Maximum Output with 100 kOhm load= +30dBu @.009%THD+N, BW 22Hz-22Khz, 1Khz sine
• Maximum Output with 600 Ohm load= +20dBu @.015%THD+N, BW 22Hz-22Khz, 1Khz sine
• Output Headroom (Referenced to +4dBu)= 26dB
• Frequency Response= -0.15dB @ 10Hz, -0.1dB @ 20KHz
• Total Harmonic Distortion (1kHz sine @ +4dBu, BW 22Hz-22kHz) = 0.004 % THD+N
• Noise Floor Limiter Bypass= -90dBu (BW 22Hz-22kHz)
• Noise Floor Limiter Engaged= -88dBu (BW 22Hz-22kHz) Input set to Unity gain
• Dynamic Range= 118dB
• Signal to Noise Ratio = 92dB (Referenced to +4dBu)
• Bypass mode = Signal goes thru ALL-TUBE audio path (Bypasses limiter) this is not a “hardwire bypass”
• Unity Gain= Set Input Attenuator @ 1:00 o’clock
• Maximum Gain= 13 dB
• Common-Mode Rejection Ratio (CMRR)= 77dB (BW 22Hz-22Khz, +4dBu, 1Khz sine)
• Limiter Ratio= 10:1
• Compressor Ratio= 3:1
• Limiter: Attack= 15ms
• Limiter Release= 200ms
• Compressor: Attack= 75ms Release= 200ms
• Attack/Release times measured under following conditions: 4dB of Gain Reduction, 1kHz sine, +4dbu Input level, to 63% of total.
• Attack times are faster with higher input levels and heavier gain reduction. Typically for complete release, release times increases up to a couple of seconds, depending upon the amount of previous reduction.
• Maximum Limiting (with +4dBu 1Khz sine)= 12dB
• Maximum Compression (with +4dBu 1Khz sine)= 6dB
• Side-Chain High Pass Filter= 80Hz (Internal user adjust jumper to 150Hz)
• Automute warmup delay=30 seconds
• Operating mains voltage= 90 to 254 VAC (internal universal power supply)
• Mains voltage Frequency= 50-60 Hz
• Power consumption= 26 Watts
• Dimensions= (w,d,h) 19" x 7 x 3 1⁄2" (occupies 2u)
• Unit weight= 9.5 Ib
• Shipping weight= 10 Ib

The ELOP+ is distinguished by its unique, fully Class-A, all-tube signal path from input to output. Unlike many optical compressors that may use tubes for color but rely on solid-state gain reduction, the ELOP+ uses a passive light-dependent resistor (LDR) to achieve smooth, transparent gain reduction with very few active components. This design results in a clean, effortless dynamic control that is free from the typical distortion and artifacts found in other compressor types.

The new "Compress" mode on the ELOP+ is designed for subtler, more transparent gain reduction. With a gentle 3:1 ratio, this mode is ideal for adding "glue" and consistency to a full mix or sub-group without over-compressing. It's perfect for applications like bus compression on drums or vocals, where you want to increase the average loudness and density of a signal while preserving its natural dynamics and transient detail.

The ELOP+ is a versatile tool for both tracking and mixing. On individual tracks, it's a go-to for vocals, acoustic guitars, and bass, where its smooth, musical character can add a professional polish. In a mixing context, its new "Compress" mode makes it an excellent choice for a stereo mix bus or sub-groups, where it can be used to gently level a track and add a final layer of sonic consistency.

The side-chain high-pass filter (HPF) on the ELOP+ prevents the compressor from "pumping" or over-reacting to bass frequencies. The detector circuit, which tells the compressor how much to reduce gain, is now filtered so that it ignores sounds below a certain frequency. This allows the compressor to react more to mid-range and high-frequency content, ensuring that a kick drum or bass line doesn't unnecessarily trigger the gain reduction, resulting in a tighter, more controlled low end.

The ELOP+ features a meticulously selected all-tube audio path. Each channel uses one 5751 dual triode tube for the input stage and one 6922 dual triode tube for the output stage. These vacuum tubes are hand-tested and calibrated by Manley to ensure they meet the highest standards of performance, providing the rich, detailed, and transparent sound that the ELOP+ is celebrated for.

Yes, the ELOP+ is a fantastic tool for mastering. Its new "Compress" mode with the 3:1 ratio provides the subtle, musical gain reduction that mastering engineers often seek. Its extremely low distortion and noise, combined with an all-tube signal path, allow it to add a rich, analog character and a gentle sense of "glue" to a stereo mix without compromising its integrity. The HPF side-chain is also a key feature for mastering, as it helps to maintain a punchy low end while controlling the overall dynamics of a track.