Looking to Develop A Short List of Amplifier Candidates For A Pair Of JBL 4367 Speakers

I have found my favorite to date with the Audio Research GS150

such clean all tube power and it drives my Vandersteen 5’s with precision. 
Have it paired with Convergent Audio Technolgy SL1 preamp and could not be happier. Highest recommendation I can give

Nice speakers, I ran Levinson amplification when I had my Jbl’s and it was a great match.  Power really opens them up and controls the bass nicely.  You have many options and also consider ARC Ref 160’s or for less the Ref 110 is a great buy as well.  I used one with NOS Winged C 6550’s and they it was a very musical amplifier with those installed.  Good luck and enjoy those JBL’s1

Take a look at the Coda Continuum No 8. Or No 16 if you can afford it. These amps fly under the radar but are very good. Amperage to drive anything with ease.

@neonknight 

whats the rest of your system look like and what’s your budget?

I love my First Watt Sit-4 with your speakers the Sit-5 would be heaven….

From ChatGPT

 

You’ve got an insightful history with amplification and speaker pairing, and it’s clear you’ve put a lot of time into understanding synergy with JBL’s larger-format speakers like the 4367. Since you’re open to tube, solid-state, and Class D, here’s a curated shortlist of top-tier amp candidates across those categories that should be well-matched to the JBL 4367’s 94 dB sensitivity and impedance profile, with your room and listening setup in mind.

 

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🔌 

Solid-State Amps (Class A / A/B)

 

Best for tight bass control and dynamic punch

 

1. Pass Labs XA25 or INT-25

    

   • Pure Class A, incredibly transparent, great harmonic texture

   • 25W/ch may seem low, but works very well with high-efficiency speakers like the 4367

   • Delivers better bass control than expected given the wattage

2. First Watt SIT-3 (if you can find one used)

    

   • Single-stage, single-ended transistor design with tube-like harmonic character

   • 18W/ch — surprisingly capable with JBLs

   • You’ve already had good results with the F7, this is a logical upgrade path

3. AVM Ovation SA 6.3 or PA 8.3

    

   • Since you liked AVM before, the new Ovation line retains their house sound but with greater refinement

   • Burmester influence is present but subtle; hybrid tube/SS variants are now available

   • Serviceability is improving in the U.S. under Burmester

4. BAT VK-255SE / REX 500

    

   • High current, clean and full-bodied; pairs well with speakers needing drive and control

   • If you go BAT, the REX gear is a big step up, especially the hybrid variants

 

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🔋 

Class D Amps

 

Modern modules paired with well-designed front ends can sound extremely natural and dynamic.

 

1. Atma-Sphere Class D Monoblocks

    

   • Ralph Karsten’s latest innovation: GaN FET topology, fully differential, zero feedback

   • Tube-like smoothness with Class D efficiency and tight bass

   • Excellent match for horns and dynamic drivers

2. Orchard Audio Starkrimson Ultra Monoblocks

    

   • GaN FET tech; very fast and resolving without being sterile

   • Has impressed even analog/tube-centric listeners

   • Modular upgrade paths and reasonably priced

3. AGD Productions Tempo or Audion

    

   • Gallium Nitride (GaN) modules encased in tube-like enclosures

   • Fast, dynamic, and eerily tube-like in presentation

   • Used by many horn and high-efficiency speaker owners

4. VTV Amplifier with Purifi 1ET400A & Tube Input Stage

    

   • Value pick; customizable input buffer (OPA op-amps or tube front-end)

   • Great detail and drive if you want more warmth via tube input

 

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🔥 

Tube Amps (Push/Pull)

 

Warmth, tone, and dynamics—but need the right power and control

 

1. Rogue Audio Stereo 100 / Apollo Dark Monoblocks

    

   • KT120/KT150 push/pull amps with muscle and finesse

   • Ideal power (100–250W depending on model) to control JBL woofers

2. VAC Renaissance 70/70 or Signature 200 iQ

    

   • Refined, dynamic, with the iQ auto-biasing system

   • Stunning synergy with high-sensitivity dynamic speakers

3. PrimaLuna EVO 400 Power Amp

    

   • KT88/EL34 options, autobias, tube rolling-friendly

   • Warm, musical, and surprisingly punchy

4. Air Tight ATM-2 or ATM-300R (if sticking with SET)

    

   • For a luxurious, boutique option

   • ATM-2 is a push/pull EL34 amp with enough drive and grace

   • ATM-300R (300B SET) would be limited but could work in near-field

 

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💡 

Power Requirements for Tubes (Push/Pull)

 

• Minimum: 20–25W/ch for intimate listening or near-field

• Ideal: 40–70W/ch push/pull (EL34, KT88, KT120)

• Overkill: 100W+ (KT150 or high-output mono pairs)

 

The 4367’s 15” woofer and horn need damping and control, especially at low-to-mid frequencies. A SET amp, unless it’s something like a 211 or high-watt 300B with a powerful output transformer, will struggle. Push/pull KT88-class amps offer a sweet spot in dynamics and control for these JBLs.

 

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🧠 Final Thoughts

 

• If you want a tube-like tone with modern control, the Atma-Sphere Class D or Orchard Starkrimson are front-runners.

• For best SS drive and tone, Pass XA25, AVM, or BAT are excellent bets.

• If returning to tubes, go push/pull, KT88–KT150, and aim for >40W/ch.

 

If you’d like, I can build a table comparing sonic character, estimated price range, and match score for each of these amps to help guide your final decision. Would you like that?