Preowned / Acapella TW 1S // Ion Tweeter / Holy Grail

$6,999

The Acapella Ion Tweeter is one of the most innovative and exotic drivers in the high-end audio world, known for delivering a level of high-frequency performance that few traditional tweeters can match. Acapella’s ion-plasma technology represents a significant departure from conventional tweeter designs that use diaphragms, such as domes or ribbons, to produce sound. Instead, the ion tweeter ionizes air to create sound waves directly, resulting in incredibly clean, precise, and distortion-free treble.

At its core, the Acapella Ion Tweeter uses an ionized gas (plasma) to generate sound. The tweeter creates a small, electrically charged plasma field, which is modulated by an audio signal. This modulated plasma directly moves the surrounding air, producing sound waves without the need for any physical diaphragm or moving parts.

This design offers a key advantage: there’s no mass to move. In a traditional tweeter, even lightweight materials like aluminum or beryllium still introduce some mechanical inertia, which can limit high-frequency extension and introduce distortion. The ion tweeter, however, bypasses these limitations, resulting in ultra-fast transient response and incredibly transparent highs.

The ion-plasma tweeter is famous for its unbelievably clean and detailed high frequencies. The highs produced by this tweeter are smooth, airy, and incredibly detailed without a hint of harshness. Whether it’s delicate cymbal work in jazz or the upper harmonics of a violin in a classical piece, the ion tweeter delivers with a level of transparency and refinement that’s rarely achieved by more conventional tweeters.

The result is a treble that feels effortless and natural, allowing instruments to breathe with incredible realism. You’ll hear more of the subtle textures and space in your music, giving you a heightened sense of presence and air. For audiophiles who crave hyper-realistic high frequencies, the Acapella Ion Tweeter is in a class of its own.

The Acapella Ion Tweeter is one of the most innovative and exotic drivers in the high-end audio world, known for delivering a level of high-frequency performance that few traditional tweeters can match. Acapella’s ion-plasma technology represents a significant departure from conventional tweeter designs that use diaphragms, such as domes or ribbons, to produce sound. Instead, the ion tweeter ionizes air to create sound waves directly, resulting in incredibly clean, precise, and distortion-free treble.

At its core, the Acapella Ion Tweeter uses an ionized gas (plasma) to generate sound. The tweeter creates a small, electrically charged plasma field, which is modulated by an audio signal. This modulated plasma directly moves the surrounding air, producing sound waves without the need for any physical diaphragm or moving parts.

This design offers a key advantage: there’s no mass to move. In a traditional tweeter, even lightweight materials like aluminum or beryllium still introduce some mechanical inertia, which can limit high-frequency extension and introduce distortion. The ion tweeter, however, bypasses these limitations, resulting in ultra-fast transient response and incredibly transparent highs.

The ion-plasma tweeter is famous for its unbelievably clean and detailed high frequencies. The highs produced by this tweeter are smooth, airy, and incredibly detailed without a hint of harshness. Whether it’s delicate cymbal work in jazz or the upper harmonics of a violin in a classical piece, the ion tweeter delivers with a level of transparency and refinement that’s rarely achieved by more conventional tweeters.

The result is a treble that feels effortless and natural, allowing instruments to breathe with incredible realism. You’ll hear more of the subtle textures and space in your music, giving you a heightened sense of presence and air. For audiophiles who crave hyper-realistic high frequencies, the Acapella Ion Tweeter is in a class of its own.



May We Suggest

Mark Levinson No. 26S // Vintage Dual Mono Preamplifier / PLS-226 PSU / 3864

Mark Levinson No. 26s // Vintage Dual Mono Preamplifier / Pls-226 Psu / 3864

$3,499
Mark Levinson No. 25S // Vintage Dual Mono MC Phono Preamplifier / PLS-226 PSU / 1707

Mark Levinson No. 25s // Vintage Dual Mono Mc Phono Preamplifier / Pls-226 Psu / 1707

$3,999
Mark Levinson No. 25S // Vintage Dual Mono MC Phono Preamplifier / PLS-226 PSU / 1643

Mark Levinson No. 25s // Vintage Dual Mono Mc Phono Preamplifier / Pls-226 Psu / 1643

$3,999
Mark Levinson No. 25S // Vintage Dual Mono MC Phono Preamplifier / PLS-226 PSU / 1850

Mark Levinson No. 25s // Vintage Dual Mono Mc Phono Preamplifier / Pls-226 Psu / 1850

$3,999
Mark Levinson No. 25S // Vintage Dual Mono MM Phono Preamplifier / PLS-226 PSU / 1747

Mark Levinson No. 25s // Vintage Dual Mono Mm Phono Preamplifier / Pls-226 Psu / 1747

$3,999
Pass Labs XVR1 // Preowned Active Crossover / 3 way / 17047-9

Pass Labs Xvr1 // Preowned Active Crossover / 3 Way / 17047-9

$5,999
Pass Labs XVR1 // Preowned Active Crossover / 3 way / 15041-3

Pass Labs Xvr1 // Preowned Active Crossover / 3 Way / 15041-3

$5,999
Aragon 4004 MKII // Vintage / Dual Mono Solid-State Amplifier

Aragon 4004 Mkii // Vintage / Dual Mono Solid-state Amplifier

$999
Mark Levinson ML-7 // Vintage Solid-State Preamplifier / PLS-154 PSU / 0602

Mark Levinson Ml-7 // Vintage Solid-state Preamplifier / Pls-154 Psu / 0602

$3,999
Mark Levinson ML-7A // Vintage Solid-State Preamplifier / PLS-154 PSU / 1190

Mark Levinson Ml-7a // Vintage Solid-state Preamplifier / Pls-154 Psu / 1190

$3,799
Mark Levinson ML-7A // Vintage Solid-State Preamplifier / PLS-154 PSU / 0112

Mark Levinson Ml-7a // Vintage Solid-state Preamplifier / Pls-154 Psu / 0112

$3,799
Conrad-Johnson PV5 // Vintage Tube Preamplifier

Conrad-johnson Pv5 // Vintage Tube Preamplifier

$1,699
Bryston 10B-Sub // Preowned / Active Subwoofer Crossover / 2

Bryston 10b-sub // Preowned / Active Subwoofer Crossover / 2

$1,699
Bryston 10B-Sub // Preowned / Active Subwoofer Crossover

Bryston 10b-sub // Preowned / Active Subwoofer Crossover

$1,699
McIntosh MQ102 // Vintage / Environmental Equalizer

Mcintosh Mq102 // Vintage / Environmental Equalizer

$399
Pass Labs XVR1 // Preowned Active Crossover / 2 way

Pass Labs Xvr1 // Preowned Active Crossover / 2 Way

$4,999
Grado PS-1000 // Preowned Professional Series Headphones / Original Box

Grado Ps-1000 // Preowned Professional Series Headphones / Original Box

$999
CAT SL-1 Signature MK2 // Vintage Tube Preamplifier with Phono

Cat Sl-1 Signature Mk2 // Vintage Tube Preamplifier With Phono

$3,999
REL Britannia B1 // Preowned Subwoofer / Cherry

Rel Britannia B1 // Preowned Subwoofer / Cherry

$1,299
AudioPax Model 88 // Preowned / KT88 SET Tube Amplifier Monoblocks

Audiopax Model 88 // Preowned / Kt88 Set Tube Amplifier Monoblocks

$3,999
VTL TT25 Tiny Triodes Limited Edition // Preowned / Upgraded 25wpc EL84 Tube Amplifier Monoblocks / Pair 2

Vtl Tt25 Tiny Triodes Limited Edition // Preowned / Upgraded 25wpc El84 Tube Amplifier Monoblocks / Pair 2

$2,799
Cello Audio Palette Multi Input Version // Vintage / Solid state Equalizer / Preamplifier // 0736

Cello Audio Palette Multi Input Version // Vintage / Solid State Equalizer / Preamplifier // 0736

$19,999
Cello Master Supply // Vintage / Power Supply For Audio Palette or Master Suite // 0979

Cello Master Supply // Vintage / Power Supply For Audio Palette Or Master Suite // 0979

$4,999
Cello Audio Suite // Vintage / Solid State Preamplifier / Loaded for Recording // 0686

Cello Audio Suite // Vintage / Solid State Preamplifier / Loaded For Recording // 0686

$15,999
Cello Master Supply // Vintage / Power Supply For Audio Palette or Master Suite // 1086

Cello Master Supply // Vintage / Power Supply For Audio Palette Or Master Suite // 1086

$4,999
Cello Audio Suite // Vintage / Solid State Preamplifier / Loaded for HiFi // 0033

Cello Audio Suite // Vintage / Solid State Preamplifier / Loaded For Hifi // 0033

$12,999
Cello Master Supply // Vintage / Power Supply For Audio Palette or Master Suite // 1353

Cello Master Supply // Vintage / Power Supply For Audio Palette Or Master Suite // 1353

$4,999
Cello Audio Palette Multi Input Version // Vintage / Solid state Equalizer / Preamplifier // 0952

Cello Audio Palette Multi Input Version // Vintage / Solid State Equalizer / Preamplifier // 0952

$19,999
VTL TT25 Tiny Triodes Limited Edition // Preowned / 25wpc EL84 Tube Amplifier Monoblocks / Pair 1

Vtl Tt25 Tiny Triodes Limited Edition // Preowned / 25wpc El84 Tube Amplifier Monoblocks / Pair 1

$2,499
Bryston BDP-1 // Vintage / Digital Audio Player

Bryston Bdp-1 // Vintage / Digital Audio Player

$399
Bryston BDA-1 // Vintage / D/A Converter / DAC

Bryston Bda-1 // Vintage / D/a Converter / Dac

$899
McIntosh C8 // Vintage / Mono Tube Preamplifier

Mcintosh C8 // Vintage / Mono Tube Preamplifier

$799
Quicksilver M-135 // Preowned / 135wpc Tube Amplifier Monoblock / Single

Quicksilver M-135 // Preowned / 135wpc Tube Amplifier Monoblock / Single

$2,499
Audio Research LS5 MKII // Vintage / Tube Line Stage Preamplifier

Audio Research Ls5 Mkii // Vintage / Tube Line Stage Preamplifier

$2,799
Audio Research PH2 // Vintage / Solid-State Phono Preamplifier

Audio Research Ph2 // Vintage / Solid-state Phono Preamplifier

$1,299
Quicksilver M-135 // Preowned / 135wpc Tube Amplifier Monoblocks / Pair 2

Quicksilver M-135 // Preowned / 135wpc Tube Amplifier Monoblocks / Pair 2

$4,999
Music First Audio // Vintage / Passive Magnetic Preamplifier

Music First Audio // Vintage / Passive Magnetic Preamplifier

$1,899
Nakamichi 700ZXL // Vintage // Legendary Three Head Cassette Deck

Nakamichi 700zxl // Vintage // Legendary Three Head Cassette Deck

$2,499
Audio Research Reference Two // Vintage / Tube Preamplifier / 2

Audio Research Reference Two // Vintage / Tube Preamplifier / 2

$2,999
Audio Research LS9 // Vintage / Solid State Line Stage Preamplifier - 2

Audio Research Ls9 // Vintage / Solid State Line Stage Preamplifier - 2

$1,399
Audio Research LS9 // Vintage / Solid State Line Stage Preamplifier

Audio Research Ls9 // Vintage / Solid State Line Stage Preamplifier

$1,399