DubFilter vs RRS EQ173
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DubFilter
This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.
- Dual low-pass/high-pass filter
- Resonance and Overlap parameter
- Stereo sample player with LFO
- Scrubbing capabilities
- Audiobus and Inter-App Audio support
- MIDI control and file management
- Preset morphing pad
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The Dub Filter is a dual low-pass/high-pass 24/48 dB filter, with resonance and the exclusive Overlap parameter! It contains a completely redesigned stereo sample player with LFO and scrubbing capabilities. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - State Variable Filter (Low-Pass and High-Pass) with resonance and overlap - Built In Stereo Sampler with varispeed and scrubbing - Control Manager LFO for all the Parameters - Midibus, Virtual Midi and Network: 14 bit NRPN controllers - File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy - Snapshots Presets Morphing Pad - Post Fx Chain: Low-shelf Filter, High-shelf and Compressor
RRS EQ173
This audio plugin emulates a vintage mic/line amplifier with comprehensive EQ controls. It offers a demo mode with limited playtime and an unlimited version available via in-app purchase. Features include stereo/mid/side EQ, undo/redo, and a scalable GUI.
- Standalone and AUv3 plugin
- Modeled vintage EQ
- Stereo, Mid, or Side EQ modes
- Undo/Redo functionality
- A/B comparison
- Scalable GUI
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EQ173 AUv3 plug-in — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the EQ173 AUv3 plug-in as many times as you want, thereby you get the Demo period again and again.) Unlimited version of EQ173 AUv3 plug-in comes as In-App Purchase. Red Rock Sound EQ173 is based on introduced in 1970, this hallowed class-A, transistor mic/line amp with EQ epitomizes the beautiful sound, with unparalleled clarity, sheen and bite. Features: • Standalone and AUv3 plug-in; • Modeled vintage EQ; • Stereo (Mono), Mid or Side EQ modes; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Built-in Gain Match; • Scalable GUI. PREAMP SECTION: • Line Gain — Line drive is increased as the knob is rotated counter-clockwise. Range: -20 to +10; • Mic Gain — To increase the mic drive, rotate the knob clockwise. Range: -20 to -80. PreAmp will not increase gain, just harmonic distortion. The distortion is mild and adds some coloration. EQ SECTION: • High Band — The High Shelf knob offers approximately ±15 dB of smooth fixed frequency shelving equalization at 12 kHz. Rotate the control clockwise to add the famous high-end sheen, or counter-clockwise to reduce the treble response; • Midrange Band— The midrange band is controlled by two knobs, delivering smooth semi-parametric midrange equalization. The right knob controls the band gain, and the left knob selects the band frequency or band disable. The response for this band has a dependence on the bandwidth as the gain is adjusted. At higher center frequencies, the Q goes up for a more focused peak; • Low Band — The low band delivers smooth low frequency shelving equalization, controlled by two knobs. The right knob controls the band gain, and the left knob selects the shelf frequency or band disable. The available range is approximately ±15 dB. The band gain is zero when the knob position indicator is pointing straight down; • Low Cut — This knob specifies the fixed frequency of the low cut (high pass) filter. This filter has an 18 dB per octave slope. The available frequencies are 50 Hz, 80 Hz, 160 Hz, 300 Hz and OFF. MASTER SECTION: • Input — Input adjusts the signal level at the input of the plug-in without effecting the sonic character of the signal. The available range is ±24 dB; • Phase — The PHASE button inverts the polarity of the signal. When the switch is engaged, the phase is inverted. Leave the switch in the disengaged for normal phase; • EQ — The equalizer is engaged when the EQ switch is engaged. To disable the EQ, disengage the switch. In the EQ173 the audio is still colored even when the EQ switch is disengaged and the EQ settings are in their «flat» positions. This is due to the fact that the signal is still passing through PreAmp circuitry; • Output — Output adjusts the signal level at the output of the plug-in without effecting the sonic character of the signal. The available range is ±24 dB. To use EQ173 as a plug-in, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — EQ173 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.
Screenshots
Verdict
The clearest difference is review sentiment: RRS EQ173 at 100% against DubFilter's 73%. RRS EQ173 also leads on update cadence (monthly vs every 6 months) and rating (4.9 vs 4.7). DubFilter's advantage is ratings volume (71 vs 22). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. DubFilter sells 1 one-off in-app purchase and RRS EQ173 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
RRS EQ173 holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 71 and 22 respectively. Written reviews point the same way: 73% of DubFilter's written reviews are positive against 100% of RRS EQ173's.
DubFilter ships an update every 6 months, RRS EQ173 monthly. Both last shipped on October 24, 2026.
| Parameter | DubFilter | RRS EQ173 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (71 ratings) | 4.9 (22 ratings) — better |
| Positive reviews | 73.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 71 — better | 22 |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Amazing Noises | RRS, OOO |
Customer experience
DubFilter
RRS EQ173
In-app purchases
DubFilter
- Audio Unit Plugin Support$1.99
RRS EQ173
- RRS EQ173 Unlimited$4.99








