Avalon 737 SP

Quick facts: Avalon · Avalon 737 SP · Processors · €100 + VAT per unit and day · rental in Madrid and across Spain, availability on request.

About the Avalon 737 SP

The Avalon 737 SP (Avalon VT-737sp) is a mono Class A valve channel strip: transformer-balanced mic preamp, instrument input, opto-compressor and four-band EQ in a 2U rack unit. For decades it has been the go-to vocal processor in pop, R&B and hip-hop studios. Peak Entertainment offers Avalon 737 SP rental in Madrid and across Spain for recording sessions, live shows and productions that need a studio-grade vocal preamp without buying a unit that costs over €4,000 new.

What it is rented for

Its most common job is vocal recording: a condenser such as the Neumann KM 184 or a dynamic such as the Shure SM58 goes into the valve preamp, through the opto-compressor and EQ, and out balanced to the SSL 2+ interface or the Zoom H6 Essential recorder. On stage it works as a premium vocal channel in front of a Midas M32r console, and its 1 MΩ instrument input takes bass or synths such as the Moog Subsequent 37 or Roland SH-101 directly, with no DI box. Two units can be linked for stereo tracking.

Key specs

• 4 Sovtek 6922 dual-triode valves in a discrete Class A circuit: two in the preamp, one in the compressor and one in the output stage.
• 3 inputs: transformer-balanced mic with +48 V (0 to +58 dB gain), 1 MΩ front-panel instrument input (0 to +30 dB) and 20 kΩ balanced line (−27 to +28 dB).
• Opto-compressor with threshold −30 to +20 dB, ratio 1:1 to 20:1, attack 2–200 ms and release 100 ms–5 s; EQ switchable pre/post and mid bands routable to the side chain for de-essing.
• 4-band Class A EQ: low shelf switched 15/30/60/150 Hz (±24 dB), two sweepable mid bands with ×10 frequency multipliers and high shelf switched 10/15/20/32 kHz (±20 dB).
• Variable 30–140 Hz high-pass filter (6 dB/oct), phase reverse on all three inputs and sealed-relay bypass.
• 10 Hz–40 kHz ±0.2 dB frequency response, −116 dB EIN and balanced XLR output up to +30 dB; VU meter switchable between output level and gain reduction.
• 2U rack, 482 × 305 × 89 mm and 10 kg; internal toroidal power supply, 100–240 V (75 W max). Made in the USA.

Frequently asked questions

How much does it cost to rent the Avalon 737 SP?

Rental is €100 per unit, VAT not included. Ask for availability and a quote by email (info@peaksound.es) or WhatsApp (+34 636 410 986) with your dates and location; we will confirm terms for Madrid or anywhere in Spain.

Is the Avalon 737 SP for live use or studio only?

Both. In the studio it is a complete vocal channel; live, it sits between the microphone and the console as the lead vocal's preamp, compressor and EQ. It weighs 10 kg and takes 2U of rack space.

Which microphone do I need for the Avalon 737 SP?

Any XLR microphone: the input is transformer-balanced with +48 V phantom power for condensers and up to +58 dB of gain for dynamics. From our catalogue you can add a Neumann KM 184, Shure SM58 or Shure SM57 to the same order.