Ampeg B5R Dual-Channel Rackmount Bass Amp Head
189th Unit Made in USA (St. Louis) in October of 2000

Up to 675W | Built-in Octave & Overdrive | 2-Space Rack | Ships in Impact-Resistant F4 Space Flight Case with Fitted Covers & Thick Rubber Feet

🇺🇸 MADE IN USA — St. Louis, MO
Up to 675 WATTS
BUILT-IN OCTAVE
BUILT-IN OVERDRIVE
2-SPACE RACK - FLIGHT CASE INCLUDED
⚡ Why This Amp Matters: This is a genuine USA-built Ampeg — manufactured by SLM Electronics at 1400 Ferguson Ave, St. Louis, MO. Not the later overseas or Woodinville production runs. If "Made in America" matters to you for quality, longevity, and serviceability, this is the one. Ampeg stopped domestic production after 2005. These are getting harder to find in clean condition. ⭐ Condition & Provenance

• I am the original owner — purchased new in 2001. This amp has had exactly one owner from the day it left the factory.
• Unit is in exceptional condition — this is not a "good for its age" listing. It genuinely looks and performs the part.
• Extremely versatile amp with a feature set that goes well beyond what most heads in this class offer — dual channels, built-in octave, built-in overdrive, channel combine, effects loop, balanced DI, preamp out, power amp in, and more. See full breakdown below.
• Very powerful — up to 675W peak output, with enough headroom to push large cabinet stacks in any venue.
• Ships protected in an impact-resistant F4 Space Flight Case with fitted covers and thick rubber feet — this rig has been taken care of and will arrive that way.

🎯 What's Included

• Ampeg B5R Bass Amplifier Head (USA / St. Louis Made) w/ Power Cable
• Impact-Resistant F4 Space Flight Case with fitted covers and thick rubber feet

📦 The Flight Case - EXCELLENT CONDITION!

• GATOR F4 Space Flight Case — impact-resistant Injection molded Poly-carbonate shell construction
• Fitted covers included (protects the front panel)
• Thick rubber feet for stable, non-slip placement on any surface
• Built for touring, travel, and long-term storage — this thing will outlast most studio racks

🔊 What It Is — The Short Version

The B5R is Ampeg's workhorse Rackmount head from their peak USA production era. Solid-state power amp, tube-voiced preamp character, two full channels (Clean + Overdrive), a variable built-in Octave circuit, and enough headroom to push a serious cabinet stack. It's a "plug it in and it works" professional rig — no tubes to bias, no nonsense.

• Clean Channel: Classic Ampeg tone — tight, punchy, and musical. Works for everything from jazz to hard rock to metal
• Overdrive Channel: Full-gain overdrive with its own Style voicing and OD Boost switch — growl to grind on demand
• Combine Mode: Run BOTH channels simultaneously for a blended "third channel" — clean foundation + overdrive grit layered together
• Built-in Octave: Variable octave divider adds a signal one full octave below your input — controllable via the Octave Volume knob
• No pedal needed to use any of these: Everything is panel-accessible

📋 Quick-Scan Summary for the Busy Buyer

• ✅ Up to 675W output power
• ✅ 2 channels — Clean + Overdrive — combinable
• ✅ Built-in variable Octave divider (sub-octave on demand)
• ✅ 10 total tone voices (5 per channel via Style switch)
• ✅ 3-band EQ: Bass / Ultra Mid / Treble
• ✅ Built-in Noise Gate on OD channel
• ✅ Balanced XLR DI output + 1/4" line out
• ✅ Tuner output (active even when muted)
• ✅ Effects Loop with wet/dry FX Blend control
• ✅ Preamp Out / Power Amp In (use as standalone preamp or power amp)
• ✅ Speakon + dual 1/4" speaker outputs
• ✅ Resettable circuit breaker
• ✅ 2U rackmount — standard 19" width
• ✅ 32 lbs
• ✅ Footswitch-ready (Channel / Octave / Combine) — footswitch NOT included
• ✅ Made in USA — SLM Electronics, St. Louis, MO
• ✅ Ships in Impact-Resistant F4 Space Flight Case with fitted covers and rubber feet
  
  👤 Who Should Buy This
• Seasoned Bassists: You already know the Ampeg name and what "SLM St. Louis" means. You want a bulletproof 2U head with channel flexibility and zero compromises — this is it.

🔧 About USA Ampeg (Why It Matters)

• Manufactured by SLM Electronics in St. Louis, Missouri — Ampeg's home during their peak production years
• MOSFET power amp design is robust, repairable, and parts are still available
• No tubes to fail, bias, or replace in the power section
• USA-built units are known for their longevity and consistent quality control
• Ampeg moved production out of St. Louis after 2005 — making genuine SLM-era units increasingly collectible and desirable

📄 Official Owner's Manual sent to buyer upon request as PDF

The complete official Ampeg B5R Owner's Guide (8 pages, original Ampeg PDF) is available here:

Manual covers all front/rear panel controls, tone setting presets (SVT, Funk, Rock, Clean, etc.), rack mounting instructions, troubleshooting, and full technical specifications.

The B5R manual includes factory starting-point presets for these common applications:

• SVT Classic
• SVT Overdriven
• Funk
• Alternative Clean
• Loud Clean Rock
• Hard-Driven Rock
• Layered Bass w/ Guitar Mix
• Power Trio

• Upgrading Players: Stepping up from a combo? This is a serious pro-level head that will push any cabinet stack and last decades. The flight case means it's ready to gig the day it arrives.
• USA-Made Buyers: Pre-2005 SLM production. Built before the brand moved overseas. Genuine American-made Ampeg quality and parts — the real deal.
• Studio / Recording: XLR balanced DI out goes direct to your board or interface. Tuner out stays live even when muted. Effects loop handles your rack gear cleanly.
• Synth / Keys Players: The Octave circuit and OD channel make this a popular choice for synth bass and keyboard rigs as well as electric bass.

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